50278 + Interview Questions in Physics Page 140 InterviewSolution

6951.	34. When a ceiling fan is switched on it makes 10 revolution in the first 4 seconds assuming a uniform angular acceleration how many Revolution it will make in the next 4 second.
Answer» 34. When a ceiling fan is switched on it makes 10 revolution in the first 4 seconds assuming a uniform angular acceleration how many Revolution it will make in the next 4 second.

Discussion

6952.	46. Two short dipoles with their moments p1 and p2 are placed parallel to each other. Find potential energy of second dipole in the field of first one
Answer» 46. Two short dipoles with their moments p1 and p2 are placed parallel to each other. Find potential energy of second dipole in the field of first one

Discussion

6953.	If α and β are the roots of the equation x2+px+2=0 and 1α and 1β are the roots of the equation 2x2+2qx+1=0, then (α−1α)(β−1β)(α+1β)(β+1α) is equal to
Answer» If $α$ and $β$ are the roots of the equation $x^{2} + p x + 2 = 0$ and $\frac{1}{α}$ and $\frac{1}{β}$ are the roots of the equation $2 x^{2} + 2 q x + 1 = 0$ , then $(α - \frac{1}{α}) (β - \frac{1}{β}) (α + \frac{1}{β}) (β + \frac{1}{α})$ is equal to

Discussion

6954.	If energy (E), velocity (V) and time (T) are chosen as the fundamental quantities, then dimensional formula of surface tension will be :
Answer» If energy (E), velocity (V) and time (T) are chosen as the fundamental quantities, then dimensional formula of surface tension will be :

Discussion

6955.	A satellite is in an ellipitcal orbit around the earth with aphelion of 5R and perihelion 3R where R is the radius of earth. At the instant it is passing through the apogee, by what amount its speed should be increased in order to make its orbit circular? (M = mass of earth)
Answer» A satellite is in an ellipitcal orbit around the earth with aphelion of $5 R$ and perihelion $3 R$ where $R$ is the radius of earth. At the instant it is passing through the apogee, by what amount its speed should be increased in order to make its orbit circular? (M = mass of earth)

Discussion

6956.	A charged 30 μF capacitor is connected to a 27 mH inductor. What isthe angular frequency of free oscillations of the circuit?
Answer» A charged 30 μF capacitor is connected to a 27 mH inductor. What isthe angular frequency of free oscillations of the circuit?

Discussion

6957.	Prove that acceleration due to gravity at centre of the earth is zero
Answer» Prove that acceleration due to gravity at centre of the earth is zero

Discussion

6958.	कवि ने पक्षी और बादल को भगवान के डाकिए क्यों बताया है?स्पष्ट कीजिए।
Answer» कवि ने पक्षी और बादल को भगवान के डाकिए क्यों बताया है?स्पष्ट कीजिए।

Discussion

6959.	a particle is moving aling circular path of radius r .When it completes a) semi circular path b) quarter circle c) full circle then by what angle its angular velocity change in all three cas
Answer» a particle is moving aling circular path of radius r .When it completes a) semi circular path b) quarter circle c) full circle then by what angle its angular velocity change in all three cas

Discussion

6960.	A particle describes a horizontal circle in a conical funnel whose inner surface is smooth with speed of 0.5 m/s. What is the height of the plane of circle from vertex of the funnel?
Answer» A particle describes a horizontal circle in a conical funnel whose inner surface is smooth with speed of $0.5 m/s$ . What is the height of the plane of circle from vertex of the funnel?

Discussion

6961.	How does inserting a dielectric between plates increase the capacitor’s stability?
Answer» How does inserting a dielectric between plates increase the capacitor’s stability?

Discussion

6962.	A particle travels first X metre with a speed v m/s next 2x m with speed 2v m/s next 3x m with a speed 3v m/s .The average speed of the particle is ?
Answer» A particle travels first X metre with a speed v m/s next 2x m with speed 2v m/s next 3x m with a speed 3v m/s .The average speed of the particle is ?

Discussion

6963.	Work done by a system under isothermal change from a volume V1 to V2 for a gas which obeys Vander Waal's equation (V−βn)(P+αn2V)=nRT
Answer» Work done by a system under isothermal change from a volume $V_{1}$ to $V_{2}$ for a gas which obeys Vander Waal's equation $(V - β n) (P + \frac{α n^{2}}{V}) = n R T$

Discussion

6964.	Two identical conducting wires AOB and COD are placed at right angles to each other. The wire AOB carries an electric current I1 and COD carries a current I2. The magnetic field on a point lying at a distance d from O, in a direction perpendicular to the plane of wires AOB and COD will be given by
Answer» Two identical conducting wires AOB and COD are placed at right angles to each other. The wire AOB carries an electric current $I_{1}$ and COD carries a current $I_{2}$ . The magnetic field on a point lying at a distance d from O, in a direction perpendicular to the plane of wires AOB and COD will be given by

Discussion

6965.	A particle of mass m is attached to three identical springs A, B and C each of force constant k as shown in figure. If the particle of mass m is pushed slightly against the spring A and released, then the time period of oscillation is
Answer» A particle of mass $m$ is attached to three identical springs $A, B$ and $C$ each of force constant $k$ as shown in figure. If the particle of mass $m$ is pushed slightly against the spring $A$ and released, then the time period of oscillation is

Discussion

6966.	the ratio of mometum of electron and an alpha particel whhx are accelerated from rest by a potenti al difference of100 v
Answer» the ratio of mometum of electron and an alpha particel whhx are accelerated from rest by a potenti al difference of100 v

Discussion

6967.	A magnetic dipole is under the influence of two magnetic fields. Theangle between the field directions is 60°, and one of the fields has amagnitude of 1.2 × 10–2 T. If the dipole comes to stable equilibrium atan angle of 15° with this field, what is the magnitude of the otherfield?
Answer» A magnetic dipole is under the influence of two magnetic fields. Theangle between the field directions is 60°, and one of the fields has amagnitude of 1.2 × 10–2 T. If the dipole comes to stable equilibrium atan angle of 15° with this field, what is the magnitude of the otherfield?

Discussion

6968.	Mass of the body remains constant, then why when we buy gold in poles the same mas becomes heavy which was buyed on equator.
Answer» Mass of the body remains constant, then why when we buy gold in poles the same mas becomes heavy which was buyed on equator.

Discussion

6969.	A bomb of mass4m is projected with velocity v at and angle theta with horizontal .at maximum height it explodes into two equal parts .one part falls at point of projection. Then at what distance from the point of projection other part will fall
Answer» A bomb of mass4m is projected with velocity v at and angle theta with horizontal .at maximum height it explodes into two equal parts .one part falls at point of projection. Then at what distance from the point of projection other part will fall

Discussion

6970.	A wave is travelling towards positive x−axis. Its equation is given by,y=2 sin(2π(5x−3t))Where, y1, x are in cm.What is the velocity of the particles of the medium, at, x=14 cm and t=14 sec?
Answer» A wave is travelling towards positive $x -$ axis. Its equation is given by, $y = 2 sin (2 π (5 x - 3 t))$ Where, $y_{1}, x$ are in $cm$ . What is the velocity of the particles of the medium, at, $x = \frac{1}{4} cm and t = \frac{1}{4} sec$ ?

Discussion

6971.	If change in internal energy is -80J.The work done by sysyem is +40 J.Calculare the heat change.
Answer» If change in internal energy is -80J.The work done by sysyem is +40 J.Calculare the heat change.

Discussion

6972.	radius of He nucleus is 3Fermi. the radius of S nucleuswill be
Answer» radius of He nucleus is 3Fermi. the radius of S nucleuswill be

Discussion

6973.	Define dimension, dimensional equation and dimension formula.
Answer» Define dimension, dimensional equation and dimension formula.

Discussion

6974.	Evaluate: ∫(3e3x+e−x)dx
Answer» Evaluate: $\int (3 e^{3 x} + e^{- x}) d x$

Discussion

6975.	How to turn a galvanometer to ammeter
Answer» How to turn a galvanometer to ammeter

Discussion

6976.	26.he phase difference between current and voltage in an AC circuit is π/4 radian. Of the frequency of AC is 50Hz then the phase difference is equivalent to the Time difference of 1) 0.75s 2) 10.5ms 3) 2.5ms
Answer» 26.he phase difference between current and voltage in an AC circuit is π/4 radian. Of the frequency of AC is 50Hz then the phase difference is equivalent to the Time difference of 1) 0.75s 2) 10.5ms 3) 2.5ms

Discussion

6977.	One mole of a diatomic gas undergoes a process P=Po1+(VVo)3 where Po and Vo are constants. The translational kinetic energy of the gas when V=Vo is given by
Answer» One mole of a diatomic gas undergoes a process $P = \frac{P_{o}}{1 + (\frac{V}{V_{o}})^{3}}$ where $P_{o}$ and $V_{o}$ are constants. The translational kinetic energy of the gas when $V = V_{o}$ is given by

Discussion

6978.	The variation of induced emf (E) with time (t) in a coil if a short bar magnet is moved along its axis with a constant velocity is best represented as
Answer» The variation of induced emf (E) with time (t) in a coil if a short bar magnet is moved along its axis with a constant velocity is best represented as

Discussion

6979.	Consider a cube of side a=0.1 m placed such that its six faces are given by equation x=0,x=+a,y=0,y=+a,z=0 and z=+a. If its placed in a electric field given by →E=x2^i+y^j N/C, the electric flux crossing out of the cube in the unit of 10−4Nm2/C is
Answer» Consider a cube of side $a = 0.1 m$ placed such that its six faces are given by equation $x = 0, x = + a, y = 0, y = + a, z = 0$ and $z = + a$ . If its placed in a electric field given by $\to E = x^{2}^i + y^j$ N/C, the electric flux crossing out of the cube in the unit of $10^{- 4} N m^{2} / C$ is

Discussion

6980.	Two parallel plate capacitors of capacitance 4 μF and 8 μF are connected in parallel and charged to a voltage of 10 V by a battery. The battery is then disconnected and the space between the plates of the 4 μF capacitor is completely filled with a material of dielectric constant 3. The potential difference across the capacitors now becomes
Answer» Two parallel plate capacitors of capacitance $4 μ F$ and $8 μ F$ are connected in parallel and charged to a voltage of $10 V$ by a battery. The battery is then disconnected and the space between the plates of the $4 μ F$ capacitor is completely filled with a material of dielectric constant $3$ . The potential difference across the capacitors now becomes

Discussion

6981.	Identify the elements X and Y using the ionisation energy values given below: Ionisation energy (kJ/mol) 1st2ndX4954563Y7311450
Answer» Identify the elements X and Y using the ionisation energy values given below: Ionisation energy $(kJ/mol)$ $\begin{matrix} 1^{s t} & 2^{n d} X & 495 & 4563 Y & 731 & 1450 \end{matrix}$

Discussion

6982.	The time period of vertical oscillations of the system shown in figure is:- (Given k1=k2=k and k3=2k)
Answer» The time period of vertical oscillations of the system shown in figure is:- (Given $k_{1} = k_{2} = k$ and $k_{3} = 2 k$ )

Discussion

6983.	22. Two men each of mass m stand on the rim of a horizontal circular disc, diametrically opp. To each other. The disc has mass M and is free to rotate about a vertical axis passing through it's centre of mass. Each mass start simultaneously along the rim clockwise and reaches their original starting points on the disc. The angle turned by the disc wrt the ground in radian is??
Answer» 22. Two men each of mass m stand on the rim of a horizontal circular disc, diametrically opp. To each other. The disc has mass M and is free to rotate about a vertical axis passing through it's centre of mass. Each mass start simultaneously along the rim clockwise and reaches their original starting points on the disc. The angle turned by the disc wrt the ground in radian is??

Discussion

6984.	13. Two trains are moving in opposite direction at 60kmph and 90kmph .Their lengths are 1.10km and 0.9km respectively. The time taken by the slower train to cross the faster train is
Answer» 13. Two trains are moving in opposite direction at 60kmph and 90kmph .Their lengths are 1.10km and 0.9km respectively. The time taken by the slower train to cross the faster train is

Discussion

6985.	What is the energy of electromagnetic radiation released in de-excitation of electron : E = hf or E = nhf ?Ot of the above formulas, which one do we use to derive the rydberg's formula ?
Answer» What is the energy of electromagnetic radiation released in de-excitation of electron : E = hf or E = nhf ? Ot of the above formulas, which one do we use to derive the rydberg's formula ?

Discussion

6986.	A particle complete 4 revolutions per second on a circular path of radius 0.25m. What is the angular velocity and centripetal acceleration of the particle.
Answer» A particle complete 4 revolutions per second on a circular path of radius 0.25m. What is the angular velocity and centripetal acceleration of the particle.

Discussion

6987.	Two tuning forks A and B made of same material are slightly out of tune and produce beats of frequency 7 Hz. When B is slightly filed, the beat frequency increases to 9 Hz. If the frequency of A is 274 Hz, the original frequency of B was
Answer» Two tuning forks $A$ and $B$ made of same material are slightly out of tune and produce beats of frequency $7 Hz$ . When $B$ is slightly filed, the beat frequency increases to $9 Hz$ . If the frequency of $A$ is $274 Hz$ , the original frequency of $B$ was

Discussion

6988.	The mean lives of radioactive substances are 1620 are 405 years for α−emission and β−emission respectively. Find out the time during which three fourth of a sample will decay if it is decaying both by α−emission and β−emission simultaneously. Choose the approximate answer. Given ln4=1.386.
Answer» The mean lives of radioactive substances are $1620$ are $405$ years for $α - emission$ and $β - emission$ respectively. Find out the time during which three fourth of a sample will decay if it is decaying both by $α - emission$ and $β - emission$ simultaneously. Choose the approximate answer. Given $ln 4 = 1.386$ .

Discussion

6989.	The electric-field strength vector is given by2.5 xi 1.5y). The electric potential at point(2m , 2m, 1m) is (Considering electric potential at origin to be zero)
Answer» The electric-field strength vector is given by2.5 xi 1.5y). The electric potential at point(2m , 2m, 1m) is (Considering electric potential at origin to be zero)

Discussion

6990.	A refrigerator works between -10^oC and 27^oC what is the coefficient of the performanc
Answer» A refrigerator works between -10^oC and 27^oC what is the coefficient of the performanc

Discussion

6991.	This piece is an example of a chatty, rambling style. One thought leads to another which is then dwelt upon at length.Read the text again and mark the transitions from one idea to another. The first one is indicated below. Make-up Department Office-boy Subbu
Answer» This piece is an example of a chatty, rambling style. One thought leads to another which is then dwelt upon at length. Read the text again and mark the transitions from one idea to another. The first one is indicated below. Make-up Department Office-boy Subbu

6991.

This piece is an example of a chatty, rambling style. One thought leads to another which is then dwelt upon at length.Read the text again and mark the transitions from one idea to another. The first one is indicated below. Make-up Department Office-boy Subbu

Answer»

This piece is an example of a chatty, rambling style. One thought leads to another which is then dwelt upon at length.

Read the text again and mark the transitions from one idea to another. The first one is indicated below.

Make-up Department Office-boy Subbu

Discussion

6992.	18.In the arrangement shown in figure neglect the masses of the pulley and string and also friction. The accelerations of blocks A and B are A) g , g/2 B) g/2, g C) 3g/2 , 3g/4 D) g, g
Answer» 18.In the arrangement shown in figure neglect the masses of the pulley and string and also friction. The accelerations of blocks A and B are A) g , g/2 B) g/2, g C) 3g/2 , 3g/4 D) g, g

Discussion

6993.	Find the second orderderivatives of the function.
Answer» Find the second order derivatives of the function.

6993.

Find the second orderderivatives of the function.

Answer»

Find the second order
derivatives of the function.

Discussion

6994.	A uniform rod of mass m and length L lies radially on a disc rotating with angular speed ω in a horizontal plane about its axis The rod does not slip on the disc and the centre of the rod is at a distance R from the centre of the disc. Then the kinetic energy of the rod is
Answer» A uniform rod of mass m and length L lies radially on a disc rotating with angular speed $ω$ in a horizontal plane about its axis The rod does not slip on the disc and the centre of the rod is at a distance R from the centre of the disc. Then the kinetic energy of the rod is

Discussion

6995.	The minimum deviations suffered by red, yellow, and violet beams passing through an equilateral transparent prism are 38.4∘, 38.7∘ and 39.2∘ respectively. Calculate the dispersive power of the medium.
Answer» The minimum deviations suffered by red, yellow, and violet beams passing through an equilateral transparent prism are ${38.4}^{\circ}, {38.7}^{\circ}$ and ${39.2}^{\circ}$ respectively. Calculate the dispersive power of the medium.

Discussion

6996.	The load versus elongation graph for four wires of the same material is shown in the figure. The thickest wire is represented by the line
Answer» The load versus elongation graph for four wires of the same material is shown in the figure. The thickest wire is represented by the line

Discussion

6997.	After getting the code, Tom got past the commando to enter the structure. This was the final level.He was supposed to find the chip which contained military grade secrets and retrieve it. After Tom retrieves the chip, he was supposed to destroy the entire structure and leave no traces of it. He had to fix a certain amount of C4 explosives on all the 4 walls of the structure.He had to choose one pair of equal amounts of C4 on two walls. There was C4 explosive material packed in 4 boxes and the amount of C4 inside each box was specified in the “power” notation. Select the options which have equal amounts of C4 –
Answer» After getting the code, Tom got past the commando to enter the structure. This was the final level.He was supposed to find the chip which contained military grade secrets and retrieve it. After Tom retrieves the chip, he was supposed to destroy the entire structure and leave no traces of it. He had to fix a certain amount of C4 explosives on all the 4 walls of the structure.He had to choose one pair of equal amounts of C4 on two walls. There was C4 explosive material packed in 4 boxes and the amount of C4 inside each box was specified in the “power” notation. Select the options which have equal amounts of C4 –

6997.

After getting the code, Tom got past the commando to enter the structure. This was the final level.He was supposed to find the chip which contained military grade secrets and retrieve it. After Tom retrieves the chip, he was supposed to destroy the entire structure and leave no traces of it. He had to fix a certain amount of C4 explosives on all the 4 walls of the structure.He had to choose one pair of equal amounts of C4 on two walls. There was C4 explosive material packed in 4 boxes and the amount of C4 inside each box was specified in the “power” notation. Select the options which have equal amounts of C4 –

Answer»

After getting the code, Tom got past the commando to enter the structure. This was the final level.He was supposed to find the chip which contained military grade secrets and retrieve it. After Tom retrieves the chip, he was supposed to destroy the entire structure and leave no traces of it.

He had to fix a certain amount of C4 explosives on all the 4 walls of the structure.He had to choose one pair of equal amounts of C4 on two walls.

There was C4 explosive material packed in 4 boxes and the amount of C4 inside each box was specified in the “power” notation. Select the options which have equal amounts of C4 –

Discussion

6998.	If the surface of a metal is successfully exposed to radiation of λ1=350 nm and λ2=450 nm, the maximum velocity of photoelectrons will differ by a factor 2. The work function of this metal is n×10−19 J. Then find the value of n. (Answer upto 2 decimal places)
Answer» If the surface of a metal is successfully exposed to radiation of $λ_{1} = 350 nm$ and $λ_{2} = 450 nm$ , the maximum velocity of photoelectrons will differ by a factor 2. The work function of this metal is $n \times 10^{- 19} J .$ Then find the value of n. (Answer upto 2 decimal places)

Discussion

6999.	Two bodies of masses m1 and m2 have equal kinetic energy. What is the ratio of their momentum?
Answer» Two bodies of masses $m_{1}$ and $m_{2}$ have equal kinetic energy. What is the ratio of their momentum?

Discussion

7000.	The mutual inductance between two planar concentric rings of radii r1 and r2 (with r1>>r2) placed in air is given by
Answer» The mutual inductance between two planar concentric rings of radii $r_{1} a n d r_{2} (w i t h r_{1} >> r_{2})$ placed in air is given by

Discussion

Explore topic-wise InterviewSolutions in .

34. When a ceiling fan is switched on it makes 10 revolution in the first 4 seconds assuming a uniform angular acceleration how many Revolution it will make in the next 4 second.

46. Two short dipoles with their moments p1 and p2 are placed parallel to each other. Find potential energy of second dipole in the field of first one

If α and β are the roots of the equation x2+px+2=0 and 1α and 1β are the roots of the equation 2x2+2qx+1=0, then (α−1α)(β−1β)(α+1β)(β+1α) is equal to

If energy (E), velocity (V) and time (T) are chosen as the fundamental quantities, then dimensional formula of surface tension will be :

A satellite is in an ellipitcal orbit around the earth with aphelion of 5R and perihelion 3R where R is the radius of earth. At the instant it is passing through the apogee, by what amount its speed should be increased in order to make its orbit circular? (M = mass of earth)

A charged 30 μF capacitor is connected to a 27 mH inductor. What isthe angular frequency of free oscillations of the circuit?

Prove that acceleration due to gravity at centre of the earth is zero

कवि ने पक्षी और बादल को भगवान के डाकिए क्यों बताया है?स्पष्ट कीजिए।

a particle is moving aling circular path of radius r .When it completes a) semi circular path b) quarter circle c) full circle then by what angle its angular velocity change in all three cas

A particle describes a horizontal circle in a conical funnel whose inner surface is smooth with speed of 0.5 m/s. What is the height of the plane of circle from vertex of the funnel?

How does inserting a dielectric between plates increase the capacitor’s stability?

A particle travels first X metre with a speed v m/s next 2x m with speed 2v m/s next 3x m with a speed 3v m/s .The average speed of the particle is ?

Work done by a system under isothermal change from a volume V1 to V2 for a gas which obeys Vander Waal's equation (V−βn)(P+αn2V)=nRT

Two identical conducting wires AOB and COD are placed at right angles to each other. The wire AOB carries an electric current I1 and COD carries a current I2. The magnetic field on a point lying at a distance d from O, in a direction perpendicular to the plane of wires AOB and COD will be given by

A particle of mass m is attached to three identical springs A, B and C each of force constant k as shown in figure. If the particle of mass m is pushed slightly against the spring A and released, then the time period of oscillation is

the ratio of mometum of electron and an alpha particel whhx are accelerated from rest by a potenti al difference of100 v

A magnetic dipole is under the influence of two magnetic fields. Theangle between the field directions is 60°, and one of the fields has amagnitude of 1.2 × 10–2 T. If the dipole comes to stable equilibrium atan angle of 15° with this field, what is the magnitude of the otherfield?

Mass of the body remains constant, then why when we buy gold in poles the same mas becomes heavy which was buyed on equator.

A bomb of mass4m is projected with velocity v at and angle theta with horizontal .at maximum height it explodes into two equal parts .one part falls at point of projection. Then at what distance from the point of projection other part will fall

A wave is travelling towards positive x−axis. Its equation is given by,y=2 sin(2π(5x−3t))Where, y1, x are in cm.What is the velocity of the particles of the medium, at, x=14 cm and t=14 sec?

If change in internal energy is -80J.The work done by sysyem is +40 J.Calculare the heat change.

radius of He nucleus is 3Fermi. the radius of S nucleuswill be

Define dimension, dimensional equation and dimension formula.

Evaluate: ∫(3e3x+e−x)dx

How to turn a galvanometer to ammeter

26.he phase difference between current and voltage in an AC circuit is π/4 radian. Of the frequency of AC is 50Hz then the phase difference is equivalent to the Time difference of 1) 0.75s 2) 10.5ms 3) 2.5ms

One mole of a diatomic gas undergoes a process P=Po1+(VVo)3 where Po and Vo are constants. The translational kinetic energy of the gas when V=Vo is given by

The variation of induced emf (E) with time (t) in a coil if a short bar magnet is moved along its axis with a constant velocity is best represented as

Consider a cube of side a=0.1 m placed such that its six faces are given by equation x=0,x=+a,y=0,y=+a,z=0 and z=+a. If its placed in a electric field given by →E=x2^i+y^j N/C, the electric flux crossing out of the cube in the unit of 10−4Nm2/C is

Identify the elements X and Y using the ionisation energy values given below: Ionisation energy (kJ/mol) 1st2ndX4954563Y7311450

The time period of vertical oscillations of the system shown in figure is:- (Given k1=k2=k and k3=2k)

13. Two trains are moving in opposite direction at 60kmph and 90kmph .Their lengths are 1.10km and 0.9km respectively. The time taken by the slower train to cross the faster train is

What is the energy of electromagnetic radiation released in de-excitation of electron : E = hf or E = nhf ?Ot of the above formulas, which one do we use to derive the rydberg's formula ?

A particle complete 4 revolutions per second on a circular path of radius 0.25m. What is the angular velocity and centripetal acceleration of the particle.

Two tuning forks A and B made of same material are slightly out of tune and produce beats of frequency 7 Hz. When B is slightly filed, the beat frequency increases to 9 Hz. If the frequency of A is 274 Hz, the original frequency of B was

The electric-field strength vector is given by2.5 xi 1.5y). The electric potential at point(2m , 2m, 1m) is (Considering electric potential at origin to be zero)

A refrigerator works between -10^oC and 27^oC what is the coefficient of the performanc

This piece is an example of a chatty, rambling style. One thought leads to another which is then dwelt upon at length.Read the text again and mark the transitions from one idea to another. The first one is indicated below. Make-up Department Office-boy Subbu

18.In the arrangement shown in figure neglect the masses of the pulley and string and also friction. The accelerations of blocks A and B are A) g , g/2 B) g/2, g C) 3g/2 , 3g/4 D) g, g

Find the second orderderivatives of the function.

A uniform rod of mass m and length L lies radially on a disc rotating with angular speed ω in a horizontal plane about its axis The rod does not slip on the disc and the centre of the rod is at a distance R from the centre of the disc. Then the kinetic energy of the rod is

The minimum deviations suffered by red, yellow, and violet beams passing through an equilateral transparent prism are 38.4∘, 38.7∘ and 39.2∘ respectively. Calculate the dispersive power of the medium.

The load versus elongation graph for four wires of the same material is shown in the figure. The thickest wire is represented by the line

If the surface of a metal is successfully exposed to radiation of λ1=350 nm and λ2=450 nm, the maximum velocity of photoelectrons will differ by a factor 2. The work function of this metal is n×10−19 J. Then find the value of n. (Answer upto 2 decimal places)

Two bodies of masses m1 and m2 have equal kinetic energy. What is the ratio of their momentum?

The mutual inductance between two planar concentric rings of radii r1 and r2 (with r1&gt;&gt;r2) placed in air is given by

The mutual inductance between two planar concentric rings of radii r1 and r2 (with r1>>r2) placed in air is given by