50278 + Interview Questions in Physics

1.	The initial velocity of a body moving along a straight line is 7 ms. It has a uniform acceleration of 4 ms2. The distance covered by the body in the 5th second of its motion is
Answer» The initial velocity of a body moving along a straight line is 7 $\frac{m}{s}$ . It has a uniform acceleration of 4 $\frac{m}{s^{2}}$ . The distance covered by the body in the $5^{t h}$ second of its motion is

Discussion

2.	A monkey of mass 15 kg is climbing on a rope with one end fixed to the ceiling. If it wishes to go up with an acceleration of 1m/s2, how much force should it apply to the rope ? If the rope is 5m long and the monkey starts from rest, how much time will it take to reach the ceiling ?
Answer» A monkey of mass 15 kg is climbing on a rope with one end fixed to the ceiling. If it wishes to go up with an acceleration of 1 $m / s^{2}$ , how much force should it apply to the rope ? If the rope is 5m long and the monkey starts from rest, how much time will it take to reach the ceiling ?

Discussion

3.	A body of mass 1 kg is traveling with a velocity of 3 m/s accelerates uniformly with 8 m/s2 to travel for 2 s. Find its final momentum
Answer» A body of mass $1 k g$ is traveling with a velocity of $3 m / s$ accelerates uniformly with $8 m / s^{2}$ to travel for $2 s$ . Find its final momentum

Discussion

4.	The retarding acceleration of 7.35 m/s2 due to frictioanl forcer stops the car of mass 400 kg travelling on road. The coefficient of friction between the tyre of the car and the road is
Answer» The retarding acceleration of $7.35 m / s^{2}$ due to frictioanl forcer stops the car of mass $400 k g$ travelling on road. The coefficient of friction between the tyre of the car and the road is

Discussion

5.	A ball is projected from the ground at angle θwith horizontal. After 1s, it is moving at angle 45∘ with horizontal and after 2s it is moving horizontally. What is velocity of projection of the ball?
Answer» A ball is projected from the ground at angle $θ$ with horizontal. After 1s, it is moving at angle $45^{\circ}$ with horizontal and after 2s it is moving horizontally. What is velocity of projection of the ball?

Discussion

6.	A potentiometer wire AB is 100 cm long and has a total resistance of 10 ohm. If the galvanometer shows zero deflection at the position C, then find the value of unknown resistance R.
Answer» A potentiometer wire $A B$ is $100 cm$ long and has a total resistance of $10 ohm$ . If the galvanometer shows zero deflection at the position $C$ , then find the value of unknown resistance $R$ .

Discussion

7.	At a depth of 500 m under an ocean, what is the absolute pressure? Given density of sea water is 1.03×103 kg/m3. (Take g=10 m/s2 & 1 atm=105 Pa)
Answer» At a depth of $500 m$ under an ocean, what is the absolute pressure? Given density of sea water is $1.03 \times 10^{3} {kg/m}^{3}$ . (Take $g = 10 {m/s}^{2}$ & $1 atm = 10^{5} Pa$ )

Discussion

8.	Two blocks of masses 5 kg and 10 kg are connected by a massless spring. A force of 20 N acts on 10 kg mass as shown. At the instant, 5 kg mass has an acceleration of 0.4ms−2,the acceleration of 10 kg mass is
Answer» Two blocks of masses 5 kg and 10 kg are connected by a massless spring. A force of 20 N acts on 10 kg mass as shown. At the instant, 5 kg mass has an acceleration of $0.4 m s^{- 2}$ ,the acceleration of 10 kg mass is

Discussion

9.	A charged particle of a mass m and charge q is released from rest in a uniform electric field E neglecting the effect of gravity, the kinetic energy of the charged particle after t second is
Answer» A charged particle of a mass m and charge q is released from rest in a uniform electric field E neglecting the effect of gravity, the kinetic energy of the charged particle after t second is

Discussion

10.	The total energy of a particle performing SHM is E. What will be the kinetic energy of the particle, when displacement is half of the amplitude?
Answer» The total energy of a particle performing $SHM$ is $E$ . What will be the kinetic energy of the particle, when displacement is half of the amplitude?

Discussion

11.	A car has source of sound of frequency 256 Hz is moving rapidly towards wall with a velocity of 5 m/sec. How many beats per second will be heard by the driver, if sound travels at a speed of 330 m/sec?
Answer» A car has source of sound of frequency $256 Hz$ is moving rapidly towards wall with a velocity of $5 m/sec$ . How many beats per second will be heard by the driver, if sound travels at a speed of 330 m/sec?

Discussion

12.	A bob of simple pendulum is suspended by a metallic wire. If the length of simple pendulum is increased four times of its initial value. Find the time period with respect to its previous value.
Answer» A bob of simple pendulum is suspended by a metallic wire. If the length of simple pendulum is increased four times of its initial value. Find the time period with respect to its previous value.

Discussion

13.	A dynamometer is attached to two bodies having masses M=6 kg and m=4 kg respectively. Forces, F=20 N and f=10 N are applied to the masses as shown in diagram. Then, the reading of the dynamometer will be
Answer» A dynamometer is attached to two bodies having masses $M = 6 k g$ and $m = 4 k g$ respectively. Forces, $F = 20 N$ and $f = 10 N$ are applied to the masses as shown in diagram. Then, the reading of the dynamometer will be

Discussion

14.	One mole of an ideal gas at initial temperature T, undergoes a quasi -static process, during which the volume V is doubled. During the process, the internal energy U varies with volume as U=aV3, where a is a constant. The work done during this process is pRT where p is
Answer» One mole of an ideal gas at initial temperature $T$ , undergoes a quasi -static process, during which the volume $V$ is doubled. During the process, the internal energy $U$ varies with volume as $U = a V^{3}$ , where $a$ is a constant. The work done during this process is $p R T$ where $p$ is

Discussion

15.	A projectile is fired from the surface of the earth with a velocity of 5 ms−1 and angle θ with the horizontal. Another projectile fired from another planet with a velocity of 3 ms−1 at the same angle follows a trajectory which is identical with the trajectory of the projectile fired from the earth. The value of the acceleration due to gravity on the planet is (in ms−2) is (Given g=9.8 ms−2)
Answer» A projectile is fired from the surface of the earth with a velocity of $5 m s^{- 1}$ and angle $θ$ with the horizontal. Another projectile fired from another planet with a velocity of $3 m s^{- 1}$ at the same angle follows a trajectory which is identical with the trajectory of the projectile fired from the earth. The value of the acceleration due to gravity on the planet is (in $m s^{- 2})$ is (Given $g = 9.8 m s^{- 2}$ )

Discussion

16.	A wheel is at rest. Its angular velocity increases uniformly and becomes 80 radian per second after 5 seconds. The angular displacement is:
Answer» A wheel is at rest. Its angular velocity increases uniformly and becomes $80$ radian per second after $5$ seconds. The angular displacement is:

Discussion

17.	The specific heat capacity of a metal is 0.01 cal/g∘C. If heat capacity of m kg of metal is 0.42 J/∘C. Find the value of m.
Answer» The specific heat capacity of a metal is $0.01 {cal/g}^{\circ} C$ . If heat capacity of $m kg$ of metal is $0.42 J /^{\circ} C$ . Find the value of $m$ .

Discussion

18.	The radius vector of a point A relative to the origin varies as →r=at^i+bt2^j where a and b are positive constants. Find the equation of trajectory.
Answer» The radius vector of a point A relative to the origin varies as $\to r = a t^i + b t^{2}^j$ where a and b are positive constants. Find the equation of trajectory.

Discussion

19.	For a point source of sound, the graph of intensity (I) versus square of distance from source (r2) is best represented by
Answer» For a point source of sound, the graph of intensity $(I)$ versus square of distance from source $(r^{2})$ is best represented by

Discussion

20.	A rod is measured to be of length 50 cm at 10∘C. Its length measured at 50∘C is x. Find x, if thermal coefficient of linear expansion of the rod is 2×10−5/∘C and of the scale is 3×10−5/∘C.
Answer» A rod is measured to be of length $50 cm$ at $10^{\circ} C$ . Its length measured at $50^{\circ} C$ is $x$ . Find $x$ , if thermal coefficient of linear expansion of the rod is $2 \times 10^{- 5} /^{\circ} C$ and of the scale is $3 \times 10^{- 5} /^{\circ} C$ .

Discussion

21.	Is it is important to start understanding motion of class 11 we first have to revise class 9 physics like motion and its laws etc.?
Answer» Is it is important to start understanding motion of class 11 we first have to revise class 9 physics like motion and its laws etc.?

Discussion

22.	What will be the Mutual Inductance if two coils are perpendicular and away from each other ?
Answer» What will be the Mutual Inductance if two coils are perpendicular and away from each other ?

Discussion

23.	Positions of two particles A and B as a function of time are given by XA=−3t2+8t+c and YB=10−8t3. The velocity of B with respect to A at t=1 is √v. Find v [in m2/s2]
Answer» Positions of two particles $A$ and $B$ as a function of time are given by $X_{A} = - 3 t^{2} + 8 t + c$ and $Y_{B} = 10 - 8 t^{3}$ . The velocity of $B$ with respect to $A$ at $t = 1$ is $\sqrt{v}$ . Find $v$ [in $m^{2} / s^{2}$ ]

Discussion

24.	the distance between 4 and 3 Bohr orbits of He+
Answer» the distance between 4 and 3 Bohr orbits of He+

Discussion

25.	S is a stationary source of sound emitting waves of frequency 440Hz. These waves are reflected by a stationary wall and heard by observer O moving away with v=10m/s. Find beat frequency (in Hz) heard by observer in the position shown (due to superposition between reflected and direct waves) (Vsound=330m/s)
Answer» S is a stationary source of sound emitting waves of frequency $440 Hz$ . These waves are reflected by a stationary wall and heard by observer O moving away with $v = 10 m/s$ . Find beat frequency (in Hz) heard by observer in the position shown (due to superposition between reflected and direct waves) $(V_{sound} = 330 m/s)$

Discussion

26.	A planet has mass 110 of that of earth, while radius is 13 that of earth. If a person can throw a stone on earth surface to a height of 90 m, then he will be able to throw the stone on that planet to a height (in m)Assume that velocity of projection remains same on earth and planet.
Answer» A planet has mass $\frac{1}{10}$ of that of earth, while radius is $\frac{1}{3}$ that of earth. If a person can throw a stone on earth surface to a height of $90 m$ , then he will be able to throw the stone on that planet to a height (in m)Assume that velocity of projection remains same on earth and planet.

Discussion

27.	What is called young modulas of a material?
Answer» What is called young modulas of a material?

Discussion

28.	What is the velocity of electron moving in 2nd orbit of hydrogen atom
Answer» What is the velocity of electron moving in 2nd orbit of hydrogen atom

Discussion

29.	When 100 volt dc is appiled across a coil, a current of 1 amp flows through it. When 100 V A.C of 50 Hz is appiled to the same coil, only 0.5 amp flows. What is the value of inductance of the coil ?
Answer» When $100$ volt dc is appiled across a coil, a current of 1 amp flows through it. When $100 V$ A.C of $50 H z$ is appiled to the same coil, only $0.5$ amp flows. What is the value of inductance of the coil ?

Discussion

30.	A particle is executing SHM of amplitude r. At the distance s from the mean position, the particle receives a blow in the direction opposite to motion which instantaneously doubles the speed. Find the new amplitude.
Answer» A particle is executing SHM of amplitude r. At the distance s from the mean position, the particle receives a blow in the direction opposite to motion which instantaneously doubles the speed. Find the new amplitude.

Discussion

31.	A circular pulley of mass ′M′ and radius ′R′, is hinged at the centre. A long string is wound over this disc and two bodies of mass m1 and m2 are attached at its free ends. Now the bodies are released. Find the acceleration of each body.
Answer» A circular pulley of mass $^{'} M^{'}$ and radius $^{'} R^{'}$ , is hinged at the centre. A long string is wound over this disc and two bodies of mass $m_{1}$ and $m_{2}$ are attached at its free ends. Now the bodies are released. Find the acceleration of each body.

Discussion

32.	A force exerts an impulse I on a particle changing its velocity from initial velocity u m/s to final velocity −2u m/s. If the applied force and initial velocity are oppositely oriented along the same line, find the work done by force.
Answer» A force exerts an impulse $I$ on a particle changing its velocity from initial velocity $u m/s$ to final velocity $- 2 u m/s$ . If the applied force and initial velocity are oppositely oriented along the same line, find the work done by force.

Discussion

33.	Water falling from a 50 m high fall is to be used for generating electric energy. If 1.8×10∘ kg of water falls per hour and half the gravitational potential energy can be converted into electric energy,how many 100 2 lamps can be lit ?
Answer» Water falling from a 50 m high fall is to be used for generating electric energy. If $1.8 \times 10^{\circ}$ kg of water falls per hour and half the gravitational potential energy can be converted into electric energy,how many 100 2 lamps can be lit ?

Discussion

34.	A cube of side length a is shown in the figure. At every corner, particles of mass m are present. Find the MOI of system of particles about y−axis.
Answer» A cube of side length $a$ is shown in the figure. At every corner, particles of mass $m$ are present. Find the MOI of system of particles about $y -$ axis.

Discussion

35.	Kirchhoff’s junction law is a consequence of which of the following law(s)?
Answer» Kirchhoff’s junction law is a consequence of which of the following law(s)?

Discussion

36.	If the temperature of a wire of length 2 m and area of cross-section 1 cm2 is increased from 0∘C to 80∘C, then force required so that the wire is not allowed to increase in length is: (Given Y=1010 N/m2,α=10−6 ∘C)
Answer» If the temperature of a wire of length $2 m$ and area of cross-section $1 {cm}^{2}$ is increased from $0^{\circ} C$ to $80^{\circ} C$ , then force required so that the wire is not allowed to increase in length is: (Given $Y = 10^{10} {N/m}^{2}, α = 10^{- 6}^{\circ} C$ )

Discussion

37.	Two bodies move towards each other from 10 m apart with a constant velocity they meet at C after 2s. What is the displacement of B w.r.t. A?
Answer» Two bodies move towards each other from 10 m apart with a constant velocity they meet at C after 2s. What is the displacement of B w.r.t. A?

Discussion

38.	The average kinetic energy of 32g of methane molecules at 27o C is
Answer» The average kinetic energy of 32g of methane molecules at 27^oC is

Discussion

39.	A spherical hole is made in a solid sphere of radius R. The mass of the sphere before hollowing was M. The gravitational field at the centre of the hole due to the remaining mas is
Answer» A spherical hole is made in a solid sphere of radius R. The mass of the sphere before hollowing was M. The gravitational field at the centre of the hole due to the remaining mas is

39.

A spherical hole is made in a solid sphere of radius R. The mass of the sphere before hollowing was M. The gravitational field at the centre of the hole due to the remaining mas is

Answer»

A spherical hole is made in a solid sphere of radius R. The mass of the sphere before hollowing was M. The gravitational field at the centre of the hole due to the remaining mas is

Discussion

40.	An object of weight W and density ρ is dipped in a fluid of density ρ1. Its apparent weight will be
Answer» An object of weight W and density $ρ$ is dipped in a fluid of density $ρ_{1}$ . Its apparent weight will be

Discussion

41.	The phenomena of reflecting light by cilia found in ctenophores is called _____
Answer» The phenomena of reflecting light by cilia found in ctenophores is called _____

Discussion

42.	What is a RC, LR, LC and LCR circuits ?
Answer» What is a RC, LR, LC and LCR circuits ?

Discussion

43.	A solid cylinder of mass 20 kg rotates about its axis with angular speed 100 rad s−1. The radius of the cylinder is 0.25 m. What is the kinetic energy associated with the rotation of the cylinder? What is the magnitude of angular momentum of the cylinder about its axis?
Answer» A solid cylinder of mass 20 kg rotates about its axis with angular speed 100 rad $s^{- 1}$ . The radius of the cylinder is 0.25 m. What is the kinetic energy associated with the rotation of the cylinder? What is the magnitude of angular momentum of the cylinder about its axis?

Discussion

44.	A man swims with a speed of 4 km/h in still water. The speed of the river is 3 km/h. He starts swimming in the river perpendicular to the direction of the flow of the current of the river. The river is 2 km wide. What is the horizontal shift of the man?
Answer» A man swims with a speed of $4 k m / h$ in still water. The speed of the river is $3 k m / h$ . He starts swimming in the river perpendicular to the direction of the flow of the current of the river. The river is $2 k m$ wide. What is the horizontal shift of the man?

Discussion

45.	An aeroplane travelled a distance of 400 km at an average speed of ‘ km/hr. On the return journey the speed was increased by 40 km/hr. Write down an equation for the time taken by the onward and return journey. If the return journey took 30mins less than the onward journey, write down an equation in and find its value.
Answer» An aeroplane travelled a distance of 400 km at an average speed of ‘ km/hr. On the return journey the speed was increased by 40 km/hr. Write down an equation for the time taken by the onward and return journey. If the return journey took 30mins less than the onward journey, write down an equation in and find its value.

45.

An aeroplane travelled a distance of 400 km at an average speed of ‘ km/hr. On the return journey the speed was increased by 40 km/hr. Write down an equation for the time taken by the onward and return journey. If the return journey took 30mins less than the onward journey, write down an equation in and find its value.

Answer»

An aeroplane travelled a distance of 400 km at an average speed of ‘ km/hr. On the return journey the speed was increased by 40 km/hr.

Write down an equation for the time taken by the onward and return journey. If the return journey took 30mins less than the onward journey, write down an equation in and find its value.

Discussion

46.	A solid sphere is in pure rolling motion on an inclined surface having inclination θ
Answer» A solid sphere is in pure rolling motion on an inclined surface having inclination $θ$

46.

A solid sphere is in pure rolling motion on an inclined surface having inclination θ

Answer»

A solid sphere is in pure rolling motion on an inclined surface having inclination $θ$

Discussion

47.	How the rods and cones are arranged in retina of owls?
Answer» How the rods and cones are arranged in retina of owls?

Discussion

48.	Figure shows a particle starting from point A, travelling upto B with a speed s, then upto point C with a speed 2s and finally upto A with a speed of 3s. If the average speed is ns, the value of n is
Answer» Figure shows a particle starting from point $A$ , travelling upto $B$ with a speed $s$ , then upto point $C$ with a speed $2 s$ and finally upto $A$ with a speed of $3 s$ . If the average speed is $n s$ , the value of $n$ is

Discussion

49.	What is the self-inductance of a coil when a change of current from 0 to 2 A in 0.05 s induces an emf of 40 V in it?
Answer» What is the self-inductance of a coil when a change of current from 0 to 2 A in 0.05 s induces an emf of 40 V in it?

Discussion

50.	What is the lenght of side C
Answer» What is the lenght of side C

50.

What is the lenght of side C

Answer»

What is the lenght of side C

Discussion

Explore topic-wise InterviewSolutions in Current Affairs.

The initial velocity of a body moving along a straight line is 7 ms. It has a uniform acceleration of 4 ms2. The distance covered by the body in the 5th second of its motion is

A monkey of mass 15 kg is climbing on a rope with one end fixed to the ceiling. If it wishes to go up with an acceleration of 1m/s2, how much force should it apply to the rope ? If the rope is 5m long and the monkey starts from rest, how much time will it take to reach the ceiling ?

A body of mass 1 kg is traveling with a velocity of 3 m/s accelerates uniformly with 8 m/s2 to travel for 2 s. Find its final momentum

The retarding acceleration of 7.35 m/s2 due to frictioanl forcer stops the car of mass 400 kg travelling on road. The coefficient of friction between the tyre of the car and the road is

A ball is projected from the ground at angle θwith horizontal. After 1s, it is moving at angle 45∘ with horizontal and after 2s it is moving horizontally. What is velocity of projection of the ball?

A potentiometer wire AB is 100 cm long and has a total resistance of 10 ohm. If the galvanometer shows zero deflection at the position C, then find the value of unknown resistance R.

At a depth of 500 m under an ocean, what is the absolute pressure? Given density of sea water is 1.03×103 kg/m3. (Take g=10 m/s2 &amp; 1 atm=105 Pa)

Two blocks of masses 5 kg and 10 kg are connected by a massless spring. A force of 20 N acts on 10 kg mass as shown. At the instant, 5 kg mass has an acceleration of 0.4ms−2,the acceleration of 10 kg mass is

A charged particle of a mass m and charge q is released from rest in a uniform electric field E neglecting the effect of gravity, the kinetic energy of the charged particle after t second is

The total energy of a particle performing SHM is E. What will be the kinetic energy of the particle, when displacement is half of the amplitude?

A car has source of sound of frequency 256 Hz is moving rapidly towards wall with a velocity of 5 m/sec. How many beats per second will be heard by the driver, if sound travels at a speed of 330 m/sec?

A bob of simple pendulum is suspended by a metallic wire. If the length of simple pendulum is increased four times of its initial value. Find the time period with respect to its previous value.

A dynamometer is attached to two bodies having masses M=6 kg and m=4 kg respectively. Forces, F=20 N and f=10 N are applied to the masses as shown in diagram. Then, the reading of the dynamometer will be

One mole of an ideal gas at initial temperature T, undergoes a quasi -static process, during which the volume V is doubled. During the process, the internal energy U varies with volume as U=aV3, where a is a constant. The work done during this process is pRT where p is

A wheel is at rest. Its angular velocity increases uniformly and becomes 80 radian per second after 5 seconds. The angular displacement is:

The specific heat capacity of a metal is 0.01 cal/g∘C. If heat capacity of m kg of metal is 0.42 J/∘C. Find the value of m.

The radius vector of a point A relative to the origin varies as →r=at^i+bt2^j where a and b are positive constants. Find the equation of trajectory.

For a point source of sound, the graph of intensity (I) versus square of distance from source (r2) is best represented by

A rod is measured to be of length 50 cm at 10∘C. Its length measured at 50∘C is x. Find x, if thermal coefficient of linear expansion of the rod is 2×10−5/∘C and of the scale is 3×10−5/∘C.

Is it is important to start understanding motion of class 11 we first have to revise class 9 physics like motion and its laws etc.?

What will be the Mutual Inductance if two coils are perpendicular and away from each other ?

Positions of two particles A and B as a function of time are given by XA=−3t2+8t+c and YB=10−8t3. The velocity of B with respect to A at t=1 is √v. Find v [in m2/s2]

the distance between 4 and 3 Bohr orbits of He+

A planet has mass 110 of that of earth, while radius is 13 that of earth. If a person can throw a stone on earth surface to a height of 90 m, then he will be able to throw the stone on that planet to a height (in m)Assume that velocity of projection remains same on earth and planet.

What is called young modulas of a material?

What is the velocity of electron moving in 2nd orbit of hydrogen atom

When 100 volt dc is appiled across a coil, a current of 1 amp flows through it. When 100 V A.C of 50 Hz is appiled to the same coil, only 0.5 amp flows. What is the value of inductance of the coil ?

A particle is executing SHM of amplitude r. At the distance s from the mean position, the particle receives a blow in the direction opposite to motion which instantaneously doubles the speed. Find the new amplitude.

A circular pulley of mass ′M′ and radius ′R′, is hinged at the centre. A long string is wound over this disc and two bodies of mass m1 and m2 are attached at its free ends. Now the bodies are released. Find the acceleration of each body.

A force exerts an impulse I on a particle changing its velocity from initial velocity u m/s to final velocity −2u m/s. If the applied force and initial velocity are oppositely oriented along the same line, find the work done by force.

Water falling from a 50 m high fall is to be used for generating electric energy. If 1.8×10∘ kg of water falls per hour and half the gravitational potential energy can be converted into electric energy,how many 100 2 lamps can be lit ?

A cube of side length a is shown in the figure. At every corner, particles of mass m are present. Find the MOI of system of particles about y−axis.

Kirchhoff’s junction law is a consequence of which of the following law(s)?

If the temperature of a wire of length 2 m and area of cross-section 1 cm2 is increased from 0∘C to 80∘C, then force required so that the wire is not allowed to increase in length is: (Given Y=1010 N/m2,α=10−6 ∘C)

Two bodies move towards each other from 10 m apart with a constant velocity they meet at C after 2s. What is the displacement of B w.r.t. A?

The average kinetic energy of 32g of methane molecules at 27o C is

A spherical hole is made in a solid sphere of radius R. The mass of the sphere before hollowing was M. The gravitational field at the centre of the hole due to the remaining mas is

An object of weight W and density ρ is dipped in a fluid of density ρ1. Its apparent weight will be

The phenomena of reflecting light by cilia found in ctenophores is called _____

What is a RC, LR, LC and LCR circuits ?

A solid cylinder of mass 20 kg rotates about its axis with angular speed 100 rad s−1. The radius of the cylinder is 0.25 m. What is the kinetic energy associated with the rotation of the cylinder? What is the magnitude of angular momentum of the cylinder about its axis?

A man swims with a speed of 4 km/h in still water. The speed of the river is 3 km/h. He starts swimming in the river perpendicular to the direction of the flow of the current of the river. The river is 2 km wide. What is the horizontal shift of the man?

A solid sphere is in pure rolling motion on an inclined surface having inclination θ

How the rods and cones are arranged in retina of owls?

Figure shows a particle starting from point A, travelling upto B with a speed s, then upto point C with a speed 2s and finally upto A with a speed of 3s. If the average speed is ns, the value of n is

What is the self-inductance of a coil when a change of current from 0 to 2 A in 0.05 s induces an emf of 40 V in it?

What is the lenght of side C

At a depth of 500 m under an ocean, what is the absolute pressure? Given density of sea water is 1.03×103 kg/m3. (Take g=10 m/s2 & 1 atm=105 Pa)