50278 + Interview Questions in Physics Page 230 InterviewSolution

11451.	A particle moves from point P(1,2,3) to Q(2,1, 4) under the action of a constant force F(2i+j+k) N Workdone by the force is
Answer» A particle moves from point P(1,2,3) to Q(2,1, 4) under the action of a constant force F(2i+j+k) N Workdone by the force is

Discussion

11452.	A wire loop enclosing a semicircle of radius R is located on the boundary of uniform magnetic field B. At time t=0, the loop is set into motion with constant angular accleration α about an axis passing through O and is perpendicular to semicircle. The clockwise emf direction is taken to be positive. The modulus of variation of emf as a function of time is (0<θ<π), then the variation of emf as a function of time is given by the graph
Answer» A wire loop enclosing a semicircle of radius $R$ is located on the boundary of uniform magnetic field $B$ . At time $t = 0$ , the loop is set into motion with constant angular accleration $α$ about an axis passing through $O$ and is perpendicular to semicircle. The clockwise emf direction is taken to be positive. The modulus of variation of emf as a function of time is ( $0 < θ < π$ ), then the variation of emf as a function of time is given by the graph

Discussion

11453.	An electron with kinetic energy K1 enters between parallel plates of a capacitor at an angle ′α′ with the plates . It leaves the plates at an angle ′β′ with kinetic energy K2 . Then the ratio of kinetic energies K1 : K2 will be :
Answer» An electron with kinetic energy $K_{1}$ enters between parallel plates of a capacitor at an angle $^{'} α^{'}$ with the plates . It leaves the plates at an angle $^{'} β^{'}$ with kinetic energy $K_{2}$ . Then the ratio of kinetic energies $K_{1}$ : $K_{2}$ will be :

Discussion

11454.	What is the SI unit of energy? Define it.Calculate the kinetic energy of a body of mass 2 kg moving with a velocity of 0.1 metre per second.[5 MARKS]
Answer» What is the SI unit of energy? Define it.Calculate the kinetic energy of a body of mass 2 kg moving with a velocity of 0.1 metre per second. [5 MARKS]

Discussion

11455.	The weight of balloon and gas inside it is 12KN. The volume of the balloon is 1200m3. The density of air is 1.26 kgm3. Calculate a) the weight it can lift b) the acceleration as it rises.
Answer» The weight of balloon and gas inside it is 12KN. The volume of the balloon is 1200 $m^{3}$ . The density of air is 1.26 $\frac{k g}{m^{3}}$ . Calculate a) the weight it can lift b) the acceleration as it rises.

Discussion

11456.	The ratio of angular speeds of second hand and minute hand of a watch is
Answer» The ratio of angular speeds of second hand and minute hand of a watch is

Discussion

11457.	Moment of inertia of ring about any of diameters is I0. Find the moment of inertia of ring about any point on its circumference and perpendicular to its plane.
Answer» Moment of inertia of ring about any of diameters is $I_{0}$ . Find the moment of inertia of ring about any point on its circumference and perpendicular to its plane.

Discussion

11458.	123.Two cars A and B are approaching in opposite directions with speeds 10 metre per sec and 20 metreper sec respectively when their seperations is d then A and B start deccelerating at 4 metrepersecsquare and 5metreper secsquare rwspectively.minimum value of d to avoid collision is
Answer» 123.Two cars A and B are approaching in opposite directions with speeds 10 metre per sec and 20 metreper sec respectively when their seperations is d then A and B start deccelerating at 4 metrepersecsquare and 5metreper secsquare rwspectively.minimum value of d to avoid collision is

Discussion

11459.	Gravitational field at the centre of semicircle formed by a thin wire AB of mass m and length l is
Answer» Gravitational field at the centre of semicircle formed by a thin wire AB of mass m and length l is

11459.

Gravitational field at the centre of semicircle formed by a thin wire AB of mass m and length l is

Answer»

Gravitational field at the centre of semicircle formed by a thin wire AB of mass m and length l is

Discussion

11460.	A hollow vertical cylinder of radius R and height h has smooth internal surface. A small particle is placed in contact with the inner side of the upper rim at a point P. It is given a horizontal speed v0 tangential to rim. It leaves the lower rim at point Q, vertically below P. The number of revolutions made by the particle will be
Answer» A hollow vertical cylinder of radius $R$ and height $h$ has smooth internal surface. A small particle is placed in contact with the inner side of the upper rim at a point $P$ . It is given a horizontal speed $v_{0}$ tangential to rim. It leaves the lower rim at point $Q$ , vertically below $P$ . The number of revolutions made by the particle will be

Discussion

11461.	The angle between the resultant contact force and the normal force exerted by a body on the other is called the angle of friction. Show that, if λ be the angle of friction and μ the coefficient fo static friction, λ≤tan−1μ
Answer» The angle between the resultant contact force and the normal force exerted by a body on the other is called the angle of friction. Show that, if $λ$ be the angle of friction and $μ$ the coefficient fo static friction, $λ \leq {tan}^{- 1} μ$

Discussion

11462.	The pulleys and strings shown in the figure are smooth and of negligible mass. For the system to remain in equilibrium, the angle θ should be
Answer» The pulleys and strings shown in the figure are smooth and of negligible mass. For the system to remain in equilibrium, the angle $θ$ should be

Discussion

11463.	Magnets A and B are geometrically similar but the magnetic moment of A is twice that of B. If T1 and T2 are the time periods of oscillation when their like poles and unlike poles are kept together respectively, then T1T2 will be -
Answer» Magnets A and B are geometrically similar but the magnetic moment of A is twice that of B. If $T_{1}$ and $T_{2}$ are the time periods of oscillation when their like poles and unlike poles are kept together respectively, then $\frac{T_{1}}{T_{2}}$ will be -

Discussion

11464.	A column with one end fixed and one end free has a critical buckling load of 100 N. For the same column, if the free end is replaced with a pinned end then the critical bucking load will be N
Answer» A column with one end fixed and one end free has a critical buckling load of 100 N. For the same column, if the free end is replaced with a pinned end then the critical bucking load will be N

Discussion

11465.	The ratio of the dimensions of Planck constant and that of moment of inertia has the dimensions of
Answer» The ratio of the dimensions of Planck constant and that of moment of inertia has the dimensions of

Discussion

11466.	Effects of strong signal and weak signal from pneumotaxic centre?
Answer» Effects of strong signal and weak signal from pneumotaxic centre?

Discussion

11467.	For a transverse wave travelling along a straight line, the distance between two peaks (crests) in 5 m, while the distance between one crest and one trough is 1.5 m. The possible wavelengths (in m) of the waves are-
Answer» For a transverse wave travelling along a straight line, the distance between two peaks (crests) in $5 m,$ while the distance between one crest and one trough is $1.5 m .$ The possible wavelengths (in $m$ ) of the waves are-

Discussion

11468.	what is the formula of †an gential or shearing stress
Answer» what is the formula of †an gential or shearing stress

Discussion

11469.	what determines the direction and slope of a v-t graph
Answer» what determines the direction and slope of a v-t graph

Discussion

11470.	Two planets have same density but different radii. The acceleration due to gravity would be 1 same on both planets 2 greater on the smaller planet 3 greater on the larger planet 4 dependent on the distance of planet from the sun
Answer» Two planets have same density but different radii. The acceleration due to gravity would be 1 same on both planets 2 greater on the smaller planet 3 greater on the larger planet 4 dependent on the distance of planet from the sun

Discussion

11471.	q is a positive charge and Q is a conductor. Electric field between charge and conductor is shown in the figure. Field along y-axis is given by E=E0(1−ky2), where k=0.25. If potential at charge q is taken 100 V, find potential at the point B on conductor as shown in figure. Given E0=50 N/C
Answer» q is a positive charge and Q is a conductor. Electric field between charge and conductor is shown in the figure. Field along y-axis is given by $E = E_{0} (1 - k y^{2})$ , where k=0.25. If potential at charge q is taken 100 V, find potential at the point B on conductor as shown in figure. Given $E_{0} = 50 N / C$

Discussion

11472.	the principle of van de graaff generator is1)electrostatic shielding 2)corona discharge 3)conduction 4) both 1 and 3
Answer» the principle of van de graaff generator is 1)electrostatic shielding 2)corona discharge 3)conduction 4) both 1 and 3

Discussion

11473.	In an astronomical telescope in normal adjustment a straight black line of length L is draw on inside part of objective lens. The eye-piece forms a real image of this line. The length of this image is I. The magnification of the telescope is
Answer» In an astronomical telescope in normal adjustment a straight black line of length $L$ is draw on inside part of objective lens. The eye-piece forms a real image of this line. The length of this image is $I$ . The magnification of the telescope is

Discussion

11474.	Two stars both of mass are orbiting their common COM. If the distance between them is d , tangential velocity of both the stars are
Answer» Two stars both of mass are orbiting their common $C O M$ . If the distance between them is d , tangential velocity of both the stars are

Discussion

11475.	A ray of light makes an angle 10 degree with horizontal above it and strikes a plane mirror inclined at an angle theta for which reflected ray becomes vertical
Answer» A ray of light makes an angle 10 degree with horizontal above it and strikes a plane mirror inclined at an angle theta for which reflected ray becomes vertical

Discussion

11476.	A uniform cylinder of length L and mass M having cross-sectional area A is suspended with its vertical length, from a fixed point by a massless spring, such that it is half submerged in a liquid of density d at equilibrium position. When the cylinder is given a small downward push and released, it starts oscillating vertically with a small amplitude. If the force constant of the spring is K, the frequency of oscillation of the cylinder is :
Answer» A uniform cylinder of length L and mass M having cross-sectional area A is suspended with its vertical length, from a fixed point by a massless spring, such that it is half submerged in a liquid of density d at equilibrium position. When the cylinder is given a small downward push and released, it starts oscillating vertically with a small amplitude. If the force constant of the spring is K, the frequency of oscillation of the cylinder is :

Discussion

11477.	The horizontal range of a bullet fired at 45∘ is 1000 m. If it is fired from the lorry, in the direction of lorry's motion, which is moving at 10 m/s, with the same velocity and elevation, then find its range in metre (Take g=10 m/s2) Take √2=1.414.
Answer» The horizontal range of a bullet fired at $45^{\circ}$ is $1000 m$ . If it is fired from the lorry, in the direction of lorry's motion, which is moving at $10 m/s$ , with the same velocity and elevation, then find its range in metre (Take $g = 10 {m/s}^{2}$ ) Take $\sqrt{2} = 1.414$ .

Discussion

11478.	ntA milli voltmeter of 25mV is to be converted to an ammeter of range 25A.The value of shunt is .Explain in detail?n
Answer» ntA milli voltmeter of 25mV is to be converted to an ammeter of range 25A.The value of shunt is .Explain in detail?n

Discussion

11479.	Block shown in column I is performing SHM with the amplitude ‘A’. Initial conditions have also been mentioned in diagrams accordingly. Answer the following questions relating these columns to each other. When block has maximum potential energy and negative acceleration initially then which combination represents this situation?
Answer» Block shown in column I is performing SHM with the amplitude ‘A’. Initial conditions have also been mentioned in diagrams accordingly. Answer the following questions relating these columns to each other. When block has maximum potential energy and negative acceleration initially then which combination represents this situation?

11479.

Block shown in column I is performing SHM with the amplitude ‘A’. Initial conditions have also been mentioned in diagrams accordingly. Answer the following questions relating these columns to each other. When block has maximum potential energy and negative acceleration initially then which combination represents this situation?

Answer»

Block shown in column I is performing SHM with the amplitude ‘A’. Initial conditions have also been mentioned in diagrams accordingly. Answer the following questions relating these columns to each other.

When block has maximum potential energy and negative acceleration initially then which combination represents this situation?

Discussion

11480.	A body of mass 20 kg is kept on a rough horizontal surface. If μs=0.5 and an external force of F=50 N is applied on the body, find the contact force on the body. (Take g=10 m/s2)
Answer» A body of mass $20 k g$ is kept on a rough horizontal surface. If $μ_{s} = 0.5$ and an external force of $F = 50 N$ is applied on the body, find the contact force on the body. (Take $g = 10 m / s^{2}$ )

Discussion

11481.	Consider the following statements: Which of the above statements is/are correct?
Answer» Consider the following statements: Which of the above statements is/are correct?

11481.

Consider the following statements: Which of the above statements is/are correct?

Answer»

Consider the following statements:

Which of the above statements is/are correct?

Discussion

11482.	Question 10 Draw a labelled sketch of the human eye.
Answer» Question 10 Draw a labelled sketch of the human eye.

Discussion

11483.	In a Young's double slit experiment, light of 500 nm is used to produce an interference pattern. When the distance between the slits is 0.05 mm, the angular width (in degree) of the fringes formed on the distance screen is close to-
Answer» In a Young's double slit experiment, light of $500 nm$ is used to produce an interference pattern. When the distance between the slits is $0.05 mm$ , the angular width (in degree) of the fringes formed on the distance screen is close to-

Discussion

11484.	There are 3 sources of sound of equal intensity with frequencies 400,401, 402 vibrations/sec. The number of beats heard per second Zero 1 2 3
Answer» There are 3 sources of sound of equal intensity with frequencies 400,401, 402 vibrations/sec. The number of beats heard per second Zero 1 2 3

Discussion

11485.	The displacement of a charge Q in the electric field E=e1^i+e2^j+e3^k is ^r=a^i+b^j. The work done is
Answer» The displacement of a charge Q in the electric field $E = e_{1}^i + e_{2}^j + e_{3}^k$ is $^r = a^i + b^j$ . The work done is

Discussion

11486.	Size of atom
Answer» Size of atom

Discussion

11487.	A vernier callipers has its main scale of 10cm equally divided into 200 parts. Its vernier scale of 25 divisions coincide , with 12mm on main scale. The least count is
Answer» A vernier callipers has its main scale of 10cm equally divided into 200 parts. Its vernier scale of 25 divisions coincide , with 12mm on main scale. The least count is

Discussion

11488.	Why in series combination the resistor having less power glow more brightly and if resistance is low then it will less brightly but p and R are directly proportional P=I2R
Answer» Why in series combination the resistor having less power glow more brightly and if resistance is low then it will less brightly but p and R are directly proportional P=I2R

Discussion

11489.	In a given L- C circuit, switch S is closed at t = 0 second, then rate of storage of energy across inductor can be given by
Answer» In a given L- C circuit, switch S is closed at t = 0 second, then rate of storage of energy across inductor can be given by

Discussion

11490.	Two coaxial discs having moments of inertia I1 and I12 are rotating with respective angular velocities ω1 and ω12, about their common axis. They are brought in contact with each other and thereafter they rotate with a common angular velocity. If Ef and Ei are the final and initial total energies, then Ef−Ei is
Answer» Two coaxial discs having moments of inertia $I_{1}$ and $\frac{I_{1}}{2}$ are rotating with respective angular velocities $ω_{1}$ and $\frac{ω_{1}}{2}$ , about their common axis. They are brought in contact with each other and thereafter they rotate with a common angular velocity. If $E_{f}$ and $E_{i}$ are the final and initial total energies, then $E_{f} - E_{i}$ is

Discussion

11491.	Two sliders A and B connected by a light rigid rod 10 m long, move in two frictionless shafts as shown in the figure. If B starts from O and is at rest initially, determine the velocity of B ( in m/s upto two decimals) when x=6 m. Assume mA=mB=200 kg and mc=100 kg,√233=0.25.
Answer» Two sliders $A$ and $B$ connected by a light rigid rod $10 m$ long, move in two frictionless shafts as shown in the figure. If $B$ starts from $O$ and is at rest initially, determine the velocity of $B$ ( in $m/s$ upto two decimals) when $x = 6 m$ . Assume $m_{A} = m_{B} = 200 kg$ and $m_{c} = 100 kg, \sqrt{\frac{2}{33}} = 0.25$ .

Discussion

11492.	A bullet loses 1n of its velocityin passing through a plank. What is the least number of planks required to stop the bullet?
Answer» A bullet loses 1n of its velocityin passing through a plank. What is the least number of planks required to stop the bullet?

Discussion

11493.	Two coaxial coils are very close to each other and their mutual inductance is 3 H. If a current i1=2sin30t A is passing through the first coil, then find the peak value of induced emf in the second coil.
Answer» Two coaxial coils are very close to each other and their mutual inductance is $3 H .$ If a current $i_{1} = 2 sin 30 t A$ is passing through the first coil, then find the peak value of induced emf in the second coil.

Discussion

11494.	The circuit shown below is working as a 8 V DC, regulated voltage source. When 12 V is used as input, the power dissipated in mW in each diode is; (considering both Zener diodes are identical)_______.
Answer» The circuit shown below is working as a $8 V$ DC, regulated voltage source. When $12 V$ is used as input, the power dissipated $in mW$ in each diode is; (considering both Zener diodes are identical)_______.

Discussion

11495.	A hollow charged metal sphere has radius r. If the potential difference between its surface and a point { at a distance 3 rfrom the centre is V, then the electric field intensity at distance 3r from the centre is
Answer» A hollow charged metal sphere has radius r. If the potential difference between its surface and a point { at a distance 3 rfrom the centre is V, then the electric field intensity at distance 3r from the centre is

Discussion

11496.	A long horizontal wire 'A' is rigidly fixed and an another wire 'B' which is placed directly below and parallel to wire 'A' . Wire B remains suspended in air due to magnetic attraction. If direction of current is reversed in any one wire than due to gravity instantaneous acceleration of free wire B is ??(where g is acceleration due to gravity)
Answer» A long horizontal wire 'A' is rigidly fixed and an another wire 'B' which is placed directly below and parallel to wire 'A' . Wire B remains suspended in air due to magnetic attraction. If direction of current is reversed in any one wire than due to gravity instantaneous acceleration of free wire B is ??(where g is acceleration due to gravity)

Discussion

11497.	A large body of mass 100 kg moving with a velocity of 10.0 m/s collides elastically with a small body of mass 100 g at rest. The velocity of the small body is
Answer» A large body of mass 100 kg moving with a velocity of 10.0 m/s collides elastically with a small body of mass 100 g at rest. The velocity of the small body is

Discussion

11498.	A 10 m long wire of resistance 20 Ω is connected in series with a battery of emf 3 V (negligible internal resistance) and a resistance of 10 Ω. Find the potential gradient along the wire
Answer» A $10 m$ long wire of resistance $20 Ω$ is connected in series with a battery of emf $3 V$ (negligible internal resistance) and a resistance of $10 Ω$ . Find the potential gradient along the wire

Discussion

11499.	53.A pendulum inside on elevator has time period T1 when the elevator is at rest ,T2 when the elevator us accelerated up with a uniform acceleration a and T3 when the elevator accelerated down with same acceleration then the relation between the time periods is
Answer» 53.A pendulum inside on elevator has time period T1 when the elevator is at rest ,T2 when the elevator us accelerated up with a uniform acceleration a and T3 when the elevator accelerated down with same acceleration then the relation between the time periods is

Discussion

11500.	A balloon behaves such that pressure inside is proportional to the diameter square contains 2 kg of water at 150 kPa, with 85% quality. The balloon and water are now heated so that a final pressure of 600 kPa is reached.The process undergone by water is given by the equation:
Answer» A balloon behaves such that pressure inside is proportional to the diameter square contains 2 kg of water at 150 kPa, with 85% quality. The balloon and water are now heated so that a final pressure of 600 kPa is reached. The process undergone by water is given by the equation:

Discussion

Explore topic-wise InterviewSolutions in .

A particle moves from point P(1,2,3) to Q(2,1, 4) under the action of a constant force F(2i+j+k) N Workdone by the force is

An electron with kinetic energy K1 enters between parallel plates of a capacitor at an angle ′α′ with the plates . It leaves the plates at an angle ′β′ with kinetic energy K2 . Then the ratio of kinetic energies K1 : K2 will be :

What is the SI unit of energy? Define it.Calculate the kinetic energy of a body of mass 2 kg moving with a velocity of 0.1 metre per second.[5 MARKS]

The weight of balloon and gas inside it is 12KN. The volume of the balloon is 1200m3. The density of air is 1.26 kgm3. Calculate a) the weight it can lift b) the acceleration as it rises.

The ratio of angular speeds of second hand and minute hand of a watch is

Moment of inertia of ring about any of diameters is I0. Find the moment of inertia of ring about any point on its circumference and perpendicular to its plane.

123.Two cars A and B are approaching in opposite directions with speeds 10 metre per sec and 20 metreper sec respectively when their seperations is d then A and B start deccelerating at 4 metrepersecsquare and 5metreper secsquare rwspectively.minimum value of d to avoid collision is

Gravitational field at the centre of semicircle formed by a thin wire AB of mass m and length l is

The angle between the resultant contact force and the normal force exerted by a body on the other is called the angle of friction. Show that, if λ be the angle of friction and μ the coefficient fo static friction, λ≤tan−1μ

The pulleys and strings shown in the figure are smooth and of negligible mass. For the system to remain in equilibrium, the angle θ should be

Magnets A and B are geometrically similar but the magnetic moment of A is twice that of B. If T1 and T2 are the time periods of oscillation when their like poles and unlike poles are kept together respectively, then T1T2 will be -

A column with one end fixed and one end free has a critical buckling load of 100 N. For the same column, if the free end is replaced with a pinned end then the critical bucking load will be N

The ratio of the dimensions of Planck constant and that of moment of inertia has the dimensions of

Effects of strong signal and weak signal from pneumotaxic centre?

For a transverse wave travelling along a straight line, the distance between two peaks (crests) in 5 m, while the distance between one crest and one trough is 1.5 m. The possible wavelengths (in m) of the waves are-

what is the formula of †an gential or shearing stress

what determines the direction and slope of a v-t graph

Two planets have same density but different radii. The acceleration due to gravity would be 1 same on both planets 2 greater on the smaller planet 3 greater on the larger planet 4 dependent on the distance of planet from the sun

q is a positive charge and Q is a conductor. Electric field between charge and conductor is shown in the figure. Field along y-axis is given by E=E0(1−ky2), where k=0.25. If potential at charge q is taken 100 V, find potential at the point B on conductor as shown in figure. Given E0=50 N/C

the principle of van de graaff generator is1)electrostatic shielding 2)corona discharge 3)conduction 4) both 1 and 3

In an astronomical telescope in normal adjustment a straight black line of length L is draw on inside part of objective lens. The eye-piece forms a real image of this line. The length of this image is I. The magnification of the telescope is

Two stars both of mass are orbiting their common COM. If the distance between them is d , tangential velocity of both the stars are

A ray of light makes an angle 10 degree with horizontal above it and strikes a plane mirror inclined at an angle theta for which reflected ray becomes vertical

The horizontal range of a bullet fired at 45∘ is 1000 m. If it is fired from the lorry, in the direction of lorry's motion, which is moving at 10 m/s, with the same velocity and elevation, then find its range in metre (Take g=10 m/s2) Take √2=1.414.

ntA milli voltmeter of 25mV is to be converted to an ammeter of range 25A.The value of shunt is .Explain in detail?n

A body of mass 20 kg is kept on a rough horizontal surface. If μs=0.5 and an external force of F=50 N is applied on the body, find the contact force on the body. (Take g=10 m/s2)

Consider the following statements: Which of the above statements is/are correct?

Question 10 Draw a labelled sketch of the human eye.

In a Young's double slit experiment, light of 500 nm is used to produce an interference pattern. When the distance between the slits is 0.05 mm, the angular width (in degree) of the fringes formed on the distance screen is close to-

There are 3 sources of sound of equal intensity with frequencies 400,401, 402 vibrations/sec. The number of beats heard per second Zero 1 2 3

The displacement of a charge Q in the electric field E=e1^i+e2^j+e3^k is ^r=a^i+b^j. The work done is

Size of atom

A vernier callipers has its main scale of 10cm equally divided into 200 parts. Its vernier scale of 25 divisions coincide , with 12mm on main scale. The least count is

Why in series combination the resistor having less power glow more brightly and if resistance is low then it will less brightly but p and R are directly proportional P=I2R

In a given L- C circuit, switch S is closed at t = 0 second, then rate of storage of energy across inductor can be given by

Two sliders A and B connected by a light rigid rod 10 m long, move in two frictionless shafts as shown in the figure. If B starts from O and is at rest initially, determine the velocity of B ( in m/s upto two decimals) when x=6 m. Assume mA=mB=200 kg and mc=100 kg,√233=0.25.

A bullet loses 1n of its velocityin passing through a plank. What is the least number of planks required to stop the bullet?

Two coaxial coils are very close to each other and their mutual inductance is 3 H. If a current i1=2sin30t A is passing through the first coil, then find the peak value of induced emf in the second coil.

The circuit shown below is working as a 8 V DC, regulated voltage source. When 12 V is used as input, the power dissipated in mW in each diode is; (considering both Zener diodes are identical)_______.

A hollow charged metal sphere has radius r. If the potential difference between its surface and a point { at a distance 3 rfrom the centre is V, then the electric field intensity at distance 3r from the centre is

A large body of mass 100 kg moving with a velocity of 10.0 m/s collides elastically with a small body of mass 100 g at rest. The velocity of the small body is

A 10 m long wire of resistance 20 Ω is connected in series with a battery of emf 3 V (negligible internal resistance) and a resistance of 10 Ω. Find the potential gradient along the wire

53.A pendulum inside on elevator has time period T1 when the elevator is at rest ,T2 when the elevator us accelerated up with a uniform acceleration a and T3 when the elevator accelerated down with same acceleration then the relation between the time periods is

A balloon behaves such that pressure inside is proportional to the diameter square contains 2 kg of water at 150 kPa, with 85% quality. The balloon and water are now heated so that a final pressure of 600 kPa is reached.The process undergone by water is given by the equation: