50278 + Interview Questions in Physics Page 129 InterviewSolution

6401.	The initial velocity of a particle is u (at t = 0) and the acceleration a is given by α t^{3/2}. Which of the following relations is valid?
Answer» The initial velocity of a particle is u (at t = 0) and the acceleration a is given by α t^{3/2}. Which of the following relations is valid?

Discussion

6402.	16. Calculate the work done in pulling an object with a constant force F as shown in figure,so that the block moves with a constant velocity through a distance 'd'(given that the ground is rough with a certain coefficient of friction)
Answer» 16. Calculate the work done in pulling an object with a constant force F as shown in figure,so that the block moves with a constant velocity through a distance 'd'(given that the ground is rough with a certain coefficient of friction)

Discussion

6403.	The temperature of the two outer surfaces of a composite slab, consisting of two materials having coefficients of thermal conductivity K and 2K and thickness X and 4X, respectively are T2 and T1 (T2>T1). The rate of heat transfer through the slab, in a steady-state, is [A(T2−T1)KX]f, with f equal to
Answer» The temperature of the two outer surfaces of a composite slab, consisting of two materials having coefficients of thermal conductivity $K$ and $2 K$ and thickness $X$ and $4 X$ , respectively are $T_{2}$ and $T_{1} (T_{2} > T_{1})$ . The rate of heat transfer through the slab, in a steady-state, is $[\frac{A (T_{2} - T_{1}) K}{X}] f$ , with $f$ equal to

Discussion

6404.	Dimension formula in any other fundamental quantity
Answer» Dimension formula in any other fundamental quantity

Discussion

6405.	A solenoid of 100 turns and area of cross-section 1 cm2 carries a current of 5 A. It acts as a bar magnet. Find the magnetic field at a point P, situated at a distance of 0.5 m on its axis.
Answer» A solenoid of $100$ turns and area of cross-section $1 {cm}^{2}$ carries a current of $5 A$ . It acts as a bar magnet. Find the magnetic field at a point $P$ , situated at a distance of $0.5 m$ on its axis.

Discussion

6406.	A convex mirror of focal length 20 cm is fitted to a motor car. If the second car with width 2 m and height 1.6 m is 6 m behind the first car and overtakes the first car at a relative speed of 15 m/s, then how fast will the image of the second car in the convex mirror of first car be moving?
Answer» A convex mirror of focal length $20 cm$ is fitted to a motor car. If the second car with width $2 m$ and height $1.6 m$ is $6 m$ behind the first car and overtakes the first car at a relative speed of $15 m/s$ , then how fast will the image of the second car in the convex mirror of first car be moving?

Discussion

6407.	138.Find the work done by external agent to fill the mass m in a spherical volume of radius R.
Answer» 138.Find the work done by external agent to fill the mass m in a spherical volume of radius R.

Discussion

6408.	Explain which direction does the zero or null vector have? If it does not have any direction, then how will it be a vector?
Answer» Explain which direction does the zero or null vector have? If it does not have any direction, then how will it be a vector?

Discussion

6409.	The wavelength of the light emitted, as an electron jumps from second orbit to first orbit in a hydrogen atom is,
Answer» The wavelength of the light emitted, as an electron jumps from second orbit to first orbit in a hydrogen atom is,

Discussion

6410.	A solid sphere is at rest on a horizontal surface. A horizontal impulse J is applied at a height h from the centre. The sphere starts rolling just after the application of impulse. The ratio hR will be
Answer» A solid sphere is at rest on a horizontal surface. A horizontal impulse $J$ is applied at a height $h$ from the centre. The sphere starts rolling just after the application of impulse. The ratio $\frac{h}{R}$ will be

Discussion

6411.	proof the law of conservation of energy
Answer» proof the law of conservation of energy

Discussion

6412.	a solid sphere of mass m and radius r having moment of inertia I about its diameter is recast into a solid disc of radius x and thickness t. the moment of inertia of disc about edge and perpendicular to plane is I, then find the relation between x and r.
Answer» a solid sphere of mass m and radius r having moment of inertia I about its diameter is recast into a solid disc of radius x and thickness t. the moment of inertia of disc about edge and perpendicular to plane is I, then find the relation between x and r.

Discussion

6413.	38.Why the weight of an object decreases with the application of buoyant force ?
Answer» 38.Why the weight of an object decreases with the application of buoyant force ?

Discussion

6414.	For an angular displacement greater than 15 degrees why is it not considered an SHM?
Answer» For an angular displacement greater than 15 degrees why is it not considered an SHM?

Discussion

6415.	A cricket ball of mass 100g moving with a velocity of 20m/s is brought to rest by a player in 0.05s the impulse of the ball is
Answer» A cricket ball of mass 100g moving with a velocity of 20m/s is brought to rest by a player in 0.05s the impulse of the ball is

Discussion

6416.	Imagine a hypothetical fluid made only of helium nuclei (practically, just liquid ionized helium), and let's say, it's seen that it floats on water, like oil. A similar fluid made of uranium(23892U) nuclei, what will happen to it once put in the same water?
Answer» Imagine a hypothetical fluid made only of helium nuclei (practically, just liquid ionized helium), and let's say, it's seen that it floats on water, like oil. A similar fluid made of uranium $(_{92}^{238} U)$ nuclei, what will happen to it once put in the same water?

Discussion

6417.	Anelectriccurrent/6Aflowsinaconductingwireof length 3.2 m. The total linear momentum ofelectrons in wire (in kg m s-1) is approximately(1) 1.1 x 10-12(2) 1.1 x 10-10(3) 2.9 x 10-12(4) 2.1 x 10-10
Answer» Anelectriccurrent/6Aflowsinaconductingwireof length 3.2 m. The total linear momentum ofelectrons in wire (in kg m s-1) is approximately(1) 1.1 x 10-12(2) 1.1 x 10-10(3) 2.9 x 10-12(4) 2.1 x 10-10

Discussion

6418.	Laplace transform of cos(ωt) is ss2+ω2. The Laplace transform of e−2tcos(4t) is
Answer» Laplace transform of $cos (ω t) i s \frac{s}{s^{2} + ω^{2}}$ . The Laplace transform of $e^{- 2 t} cos (4 t)$ is

Discussion

6419.	A solid sphere is released with velocity of centre of mass v at t=0 on a horizontal plane.the velocity of CM when it attains pure rolling
Answer» A solid sphere is released with velocity of centre of mass v at t=0 on a horizontal plane.the velocity of CM when it attains pure rolling

Discussion

6420.	The ratio of the magnitude of electric field due to +q and – 2q at a point where net potential is zero on positive x-axis is z : 1, then z will be
Answer» The ratio of the magnitude of electric field due to +q and – 2q at a point where net potential is zero on positive x-axis is z : 1, then z will be

Discussion

6421.	A uniform rod PQ of length L is hinged at one end P. The rod is kept in the horizontal position by a massless string tied to point Q as shown in the figure. If the string is cut, the initial angular acceleration of the rod will be
Answer» A uniform rod PQ of length L is hinged at one end P. The rod is kept in the horizontal position by a massless string tied to point Q as shown in the figure. If the string is cut, the initial angular acceleration of the rod will be

Discussion

6422.	A parallel plate capacitor is charged with a battery of emf V volts. After charging, the battery is disconnected and the distance between the plates is increased to 1.5 times the initial value. The new potential across the plates of the capacitor will become[0.77 Mark]
Answer» A parallel plate capacitor is charged with a battery of emf $V$ volts. After charging, the battery is disconnected and the distance between the plates is increased to $1.5$ times the initial value. The new potential across the plates of the capacitor will become $[$ 0.77 Mark $]$

Discussion

6423.	Which of the following would be the path traced by a ball thrown up in the air at any direction apart from vertically up?
Answer» Which of the following would be the path traced by a ball thrown up in the air at any direction apart from vertically up?

Discussion

6424.	Two towns A and B are connected by a regular bus service with a bus leaving in either direction every T minutes. A man cycling with a speed of 20 km h¯¹ in the direction A to B notices that a bus goes past him every 18 min in the direction of his motion, and every 6 min in the opposite direction. What is the period T of the bus service and with what speed (assumed constant) do the buses ply on the road?
Answer» Two towns A and B are connected by a regular bus service with a bus leaving in either direction every T minutes. A man cycling with a speed of 20 km h¯¹ in the direction A to B notices that a bus goes past him every 18 min in the direction of his motion, and every 6 min in the opposite direction. What is the period T of the bus service and with what speed (assumed constant) do the buses ply on the road?

Discussion

6425.	Two persons A and B, each carrying a source of sound of frequency f, are standing a few metres apart in a quiet field. A starts moving towards B with a speed u. If v is the speed of sound, the number of beats heard per second by A will be
Answer» Two persons A and B, each carrying a source of sound of frequency $f$ , are standing a few metres apart in a quiet field. A starts moving towards B with a speed $u$ . If $v$ is the speed of sound, the number of beats heard per second by A will be

Discussion

6426.	A thin uniform rod, of length 4l and mass 4m, is bent at the points as shown in the fig. What is the moment of inertia of the rod about the axis passing through point O & perpendicular to the plane of the paper?
Answer» A thin uniform rod, of length $4 l$ and mass $4 m$ , is bent at the points as shown in the fig. What is the moment of inertia of the rod about the axis passing through point $O$ & perpendicular to the plane of the paper?

Discussion

6427.	A ball moving with speed v in x direction changes its direction and speed. Its speed reduces to v2 in y− direction. Find out the magnitude of the impulse on the ball while the ball changes its direction. [Given mass of the ball is m]
Answer» A ball moving with speed $v$ in $x$ direction changes its direction and speed. Its speed reduces to $\frac{v}{2}$ in $y -$ direction. Find out the magnitude of the impulse on the ball while the ball changes its direction. [Given mass of the ball is $m$ ]

Discussion

6428.	When cells are connected in parallel having EMF E1 E2 and so on but the resultant EMS is e so I want to ask why EMF is not additive in this case why in series combination EMF gets added
Answer» When cells are connected in parallel having EMF E1 E2 and so on but the resultant EMS is e so I want to ask why EMF is not additive in this case why in series combination EMF gets added

Discussion

6429.	The acceleration due to gravity about the earth's surface would be half of its value on the surface of the earth at an altitude of (R=4000mile) 1) 1200 mile b)2000mile c) 1600 mile d) 4000 mil
Answer» The acceleration due to gravity about the earth's surface would be half of its value on the surface of the earth at an altitude of (R=4000mile) 1) 1200 mile b)2000mile c) 1600 mile d) 4000 mil

Discussion

6430.	A car is accelerating forward with an acceleration 9.8 metre per second square A pendulum is suspended from it selling calculate the angle made by the string with Vertical in steady state
Answer» A car is accelerating forward with an acceleration 9.8 metre per second square A pendulum is suspended from it selling calculate the angle made by the string with Vertical in steady state

Discussion

6431.	A and B are the two vectors and the angle between them is 60∘. If the resultant of these vectors are inclined at an angle of 45∘ to the vector B, then the value of BA is
Answer» $A$ and $B$ are the two vectors and the angle between them is $60^{\circ}$ . If the resultant of these vectors are inclined at an angle of $45^{\circ}$ to the vector $B$ , then the value of $\frac{B}{A}$ is

Discussion

6432.	A block of mass 1 kg traveling in a straight line with a velocity of 10 ms–1 collides with and sticks to a stationary wooden block of mass 5 kg. Then they both move off together in the same straight line. Calculate the total momentum just before the impact, just after the impact and the velocity of the combined object.
Answer» A block of mass 1 kg traveling in a straight line with a velocity of 10 ms^–1 collides with and sticks to a stationary wooden block of mass 5 kg. Then they both move off together in the same straight line. Calculate the total momentum just before the impact, just after the impact and the velocity of the combined object.

Discussion

6433.	A force F=(5√3^i+5^j) N is acting on a body at point (1,1)m. Calculate torque of this body w.r.t to point (1,0) m
Answer» A force $F = (5 \sqrt{3}^i + 5^j) N$ is acting on a body at point $(1, 1) m$ . Calculate torque of this body w.r.t to point $(1, 0) m$

Discussion

6434.	In the first experiment, two identical conducting rods are joined one after the other and this combination is connected to two vessels, one containing water at 100∘ C and the other containing ice at 0∘ C (see Fig). In the second experiment, the two rods are placed one on top of the other and ends are connected to the same vessels. If q1 and q2 (in gram per second) are the respective rates of melting of ice in the two cases, then the ratio q1q2 is
Answer» In the first experiment, two identical conducting rods are joined one after the other and this combination is connected to two vessels, one containing water at $100^{\circ} C$ and the other containing ice at $0^{\circ} C$ (see Fig). In the second experiment, the two rods are placed one on top of the other and ends are connected to the same vessels. If $q_{1}$ and $q_{2}$ (in gram per second) are the respective rates of melting of ice in the two cases, then the ratio $\frac{q_{1}}{q_{2}}$ is

Discussion

6435.	Find the height of the center of mass of the equilateral triangular lamina from the side AB as shown in figure. Given, side of the triangular lamina is 3 m.
Answer» Find the height of the center of mass of the equilateral triangular lamina from the side $AB$ as shown in figure. Given, side of the triangular lamina is $3 m$ .

Discussion

6436.	What is the mass of KClO3 that will liberate 11.35litre O2 at STP?
Answer» What is the mass of KClO3 that will liberate 11.35litre O2 at STP?

Discussion

6437.	Water contained in a tank flows through an orifice of diameter 2 cm. The rate of flow of water through the orifice is
Answer» Water contained in a tank flows through an orifice of diameter $2 cm$ . The rate of flow of water through the orifice is

Discussion

6438.	In the figure shown below, the block on the frictionless surface is having acceleration a towards left and the other block is having acceleration a′. Find the relation between the accelerations of the two blocks.
Answer» In the figure shown below, the block on the frictionless surface is having acceleration $a$ towards left and the other block is having acceleration $a^{'}$ . Find the relation between the accelerations of the two blocks.

Discussion

6439.	At time t=0, one particle is at maximum positive amplitude and the other particle is at1/\sqrt{2 } other positive amplitude. Their amplitudes and time penods T are same if they are approaching, find the time by which they cross each other.1)T/6 2)T/12 3)T/16 4)T/2
Answer» At time t=0, one particle is at maximum positive amplitude and the other particle is at1/\sqrt{2 } other positive amplitude. Their amplitudes and time penods T are same if they are approaching, find the time by which they cross each other.1)T/6 2)T/12 3)T/16 4)T/2

Discussion

6440.	Find the ratio of de Broglie wavelength of an alpha particle to that of a proton being subjected to the same magnetic field so that the radii of their path are equal to each other assuming the field induction vector is perpendicular to the velocity vector of the alpha particle and proton
Answer» Find the ratio of de Broglie wavelength of an alpha particle to that of a proton being subjected to the same magnetic field so that the radii of their path are equal to each other assuming the field induction vector is perpendicular to the velocity vector of the alpha particle and proton

Discussion

6441.	definition of normal reaction, limiting friction and something more about them.
Answer» definition of normal reaction, limiting friction and something more about them.

Discussion

6442.	80.two charges -10mc and 30mc separated by 30cm .ratio of forces acting on them is ??
Answer» 80.two charges -10mc and 30mc separated by 30cm .ratio of forces acting on them is ??

Discussion

6443.	Due to the flow of current in the circular loop of radius R magnetic induction produced at the centre of the loop is B.The magnetic moment of the loop is,
Answer» Due to the flow of current in the circular loop of radius $R$ magnetic induction produced at the centre of the loop is $B$ .The magnetic moment of the loop is,

Discussion

6444.	A block of mass 1 kg is placed at the point A of a rough track shown in figure. If slightly pushed towards right, it stops at the point B of the track. Calculate the work done by the frictional force on the block during its transit from A to B.
Answer» A block of mass 1 kg is placed at the point A of a rough track shown in figure. If slightly pushed towards right, it stops at the point B of the track. Calculate the work done by the frictional force on the block during its transit from A to B.

6444.

A block of mass 1 kg is placed at the point A of a rough track shown in figure. If slightly pushed towards right, it stops at the point B of the track. Calculate the work done by the frictional force on the block during its transit from A to B.

Answer»

A block of mass 1 kg is placed at the point A of a rough track shown in figure. If slightly pushed towards right, it stops at the point B of the track. Calculate the work done by the frictional force on the block during its transit from A to B.

Discussion

6445.	A projectile is thrown from a point O on the ground at an angle 45∘ from the vertical and with a speed 5√2 m/s. The projectile at the highest point of its trajectory splits into two equal parts. One part falls vertically down to the ground, 0.5 s after the splitting. The other part, t seconds after the splitting, falls to the ground at a distance x meters from the point O. The acceleration due to gravity g=10 m/s2. The value of x is
Answer» A projectile is thrown from a point $O$ on the ground at an angle $45^{\circ}$ from the vertical and with a speed $5 \sqrt{2} m/s$ . The projectile at the highest point of its trajectory splits into two equal parts. One part falls vertically down to the ground, $0.5 s$ after the splitting. The other part, $t$ seconds after the splitting, falls to the ground at a distance $x$ meters from the point $O .$ The acceleration due to gravity $g = 10 {m/s}^{2}$ . The value of $x$ is

Discussion

6446.	Consider the message signal shown in the figure below:If this message signal m(t) is applied to an FM modulator whose frequency sensitivity is kf=0.5Hz/V, then the maximum phase deviation of the resultant FM signal will be _____ radians.18.85
Answer» Consider the message signal shown in the figure below: If this message signal m(t) is applied to an FM modulator whose frequency sensitivity is $k_{f} = 0.5 H z / V$ , then the maximum phase deviation of the resultant FM signal will be _____ radians. 18.85

6446.

Consider the message signal shown in the figure below:If this message signal m(t) is applied to an FM modulator whose frequency sensitivity is kf=0.5Hz/V, then the maximum phase deviation of the resultant FM signal will be _____ radians.18.85

Answer»

Consider the message signal shown in the figure below:

If this message signal m(t) is applied to an FM modulator whose frequency sensitivity is $k_{f} = 0.5 H z / V$ , then the maximum phase deviation of the resultant FM signal will be _____ radians.

18.85

Discussion

6447.	The value of (sin30° + cos30°) – (sin60° + cos60°) is ________.
Answer» The value of (sin30° + cos30°) – (sin60° + cos60°) is ________.

Discussion

6448.	A gas performs Q work when it expands at constant pressure. During this process heat absorbed by the gas is 4Q. The average number of degrees of freedom for the gas is
Answer» A gas performs $Q$ work when it expands at constant pressure. During this process heat absorbed by the gas is $4 Q$ . The average number of degrees of freedom for the gas is

Discussion

6449.	72.A heavy but uniform rope of length L is suspended from a cieling.A particle is dropped from the ceiling at the instant the bottom end is given the jerk. Where will the particle meet the pulse?
Answer» 72.A heavy but uniform rope of length L is suspended from a cieling.A particle is dropped from the ceiling at the instant the bottom end is given the jerk. Where will the particle meet the pulse?

Discussion

6450.	Calculate the moment of Inertia of uniform solid sphere of mass M and Radius R, about its diameter
Answer» Calculate the moment of Inertia of uniform solid sphere of mass $M$ and Radius $R$ , about its diameter

6450.

Calculate the moment of Inertia of uniform solid sphere of mass M and Radius R, about its diameter

Answer»

Calculate the moment of Inertia of uniform solid sphere of mass $M$ and Radius $R$ , about its diameter

Discussion

Explore topic-wise InterviewSolutions in .

The initial velocity of a particle is u (at t = 0) and the acceleration a is given by α t^{3/2}. Which of the following relations is valid?

16. Calculate the work done in pulling an object with a constant force F as shown in figure,so that the block moves with a constant velocity through a distance 'd'(given that the ground is rough with a certain coefficient of friction)

Dimension formula in any other fundamental quantity

A solenoid of 100 turns and area of cross-section 1 cm2 carries a current of 5 A. It acts as a bar magnet. Find the magnetic field at a point P, situated at a distance of 0.5 m on its axis.

A convex mirror of focal length 20 cm is fitted to a motor car. If the second car with width 2 m and height 1.6 m is 6 m behind the first car and overtakes the first car at a relative speed of 15 m/s, then how fast will the image of the second car in the convex mirror of first car be moving?

138.Find the work done by external agent to fill the mass m in a spherical volume of radius R.

Explain which direction does the zero or null vector have? If it does not have any direction, then how will it be a vector?

The wavelength of the light emitted, as an electron jumps from second orbit to first orbit in a hydrogen atom is,

A solid sphere is at rest on a horizontal surface. A horizontal impulse J is applied at a height h from the centre. The sphere starts rolling just after the application of impulse. The ratio hR will be

proof the law of conservation of energy

a solid sphere of mass m and radius r having moment of inertia I about its diameter is recast into a solid disc of radius x and thickness t. the moment of inertia of disc about edge and perpendicular to plane is I, then find the relation between x and r.

38.Why the weight of an object decreases with the application of buoyant force ?

For an angular displacement greater than 15 degrees why is it not considered an SHM?

A cricket ball of mass 100g moving with a velocity of 20m/s is brought to rest by a player in 0.05s the impulse of the ball is

Imagine a hypothetical fluid made only of helium nuclei (practically, just liquid ionized helium), and let's say, it's seen that it floats on water, like oil. A similar fluid made of uranium(23892U) nuclei, what will happen to it once put in the same water?

Anelectriccurrent/6Aflowsinaconductingwireof length 3.2 m. The total linear momentum ofelectrons in wire (in kg m s-1) is approximately(1) 1.1 x 10-12(2) 1.1 x 10-10(3) 2.9 x 10-12(4) 2.1 x 10-10

Laplace transform of cos(ωt) is ss2+ω2. The Laplace transform of e−2tcos(4t) is

A solid sphere is released with velocity of centre of mass v at t=0 on a horizontal plane.the velocity of CM when it attains pure rolling

The ratio of the magnitude of electric field due to +q and – 2q at a point where net potential is zero on positive x-axis is z : 1, then z will be

A uniform rod PQ of length L is hinged at one end P. The rod is kept in the horizontal position by a massless string tied to point Q as shown in the figure. If the string is cut, the initial angular acceleration of the rod will be

A parallel plate capacitor is charged with a battery of emf V volts. After charging, the battery is disconnected and the distance between the plates is increased to 1.5 times the initial value. The new potential across the plates of the capacitor will become[0.77 Mark]

Which of the following would be the path traced by a ball thrown up in the air at any direction apart from vertically up?

Two persons A and B, each carrying a source of sound of frequency f, are standing a few metres apart in a quiet field. A starts moving towards B with a speed u. If v is the speed of sound, the number of beats heard per second by A will be

A thin uniform rod, of length 4l and mass 4m, is bent at the points as shown in the fig. What is the moment of inertia of the rod about the axis passing through point O &amp; perpendicular to the plane of the paper?

A ball moving with speed v in x direction changes its direction and speed. Its speed reduces to v2 in y− direction. Find out the magnitude of the impulse on the ball while the ball changes its direction. [Given mass of the ball is m]

When cells are connected in parallel having EMF E1 E2 and so on but the resultant EMS is e so I want to ask why EMF is not additive in this case why in series combination EMF gets added

The acceleration due to gravity about the earth's surface would be half of its value on the surface of the earth at an altitude of (R=4000mile) 1) 1200 mile b)2000mile c) 1600 mile d) 4000 mil

A car is accelerating forward with an acceleration 9.8 metre per second square A pendulum is suspended from it selling calculate the angle made by the string with Vertical in steady state

A and B are the two vectors and the angle between them is 60∘. If the resultant of these vectors are inclined at an angle of 45∘ to the vector B, then the value of BA is

A force F=(5√3^i+5^j) N is acting on a body at point (1,1)m. Calculate torque of this body w.r.t to point (1,0) m

Find the height of the center of mass of the equilateral triangular lamina from the side AB as shown in figure. Given, side of the triangular lamina is 3 m.

What is the mass of KClO3 that will liberate 11.35litre O2 at STP?

Water contained in a tank flows through an orifice of diameter 2 cm. The rate of flow of water through the orifice is

In the figure shown below, the block on the frictionless surface is having acceleration a towards left and the other block is having acceleration a′. Find the relation between the accelerations of the two blocks.

At time t=0, one particle is at maximum positive amplitude and the other particle is at1/\sqrt{2 } other positive amplitude. Their amplitudes and time penods T are same if they are approaching, find the time by which they cross each other.1)T/6 2)T/12 3)T/16 4)T/2

Find the ratio of de Broglie wavelength of an alpha particle to that of a proton being subjected to the same magnetic field so that the radii of their path are equal to each other assuming the field induction vector is perpendicular to the velocity vector of the alpha particle and proton

definition of normal reaction, limiting friction and something more about them.

80.two charges -10mc and 30mc separated by 30cm .ratio of forces acting on them is ??

Due to the flow of current in the circular loop of radius R magnetic induction produced at the centre of the loop is B.The magnetic moment of the loop is,

A block of mass 1 kg is placed at the point A of a rough track shown in figure. If slightly pushed towards right, it stops at the point B of the track. Calculate the work done by the frictional force on the block during its transit from A to B.

Consider the message signal shown in the figure below:If this message signal m(t) is applied to an FM modulator whose frequency sensitivity is kf=0.5Hz/V, then the maximum phase deviation of the resultant FM signal will be _____ radians.18.85

The value of (sin30° + cos30°) – (sin60° + cos60°) is ________.

A gas performs Q work when it expands at constant pressure. During this process heat absorbed by the gas is 4Q. The average number of degrees of freedom for the gas is

72.A heavy but uniform rope of length L is suspended from a cieling.A particle is dropped from the ceiling at the instant the bottom end is given the jerk. Where will the particle meet the pulse?

Calculate the moment of Inertia of uniform solid sphere of mass M and Radius R, about its diameter

A thin uniform rod, of length 4l and mass 4m, is bent at the points as shown in the fig. What is the moment of inertia of the rod about the axis passing through point O & perpendicular to the plane of the paper?