50278 + Interview Questions in Physics

1.	4.The ceiling of a long hall is 25m high.what is the maximum horizontal distance that a ball thrown with a speed of 40m/s can go without hitting the ceiling of the hall?
Answer» 4.The ceiling of a long hall is 25m high.what is the maximum horizontal distance that a ball thrown with a speed of 40m/s can go without hitting the ceiling of the hall?

Discussion

2.	A simple pendulum with a solid metal bob has time period T. The metal bob is now completely immersed in a liquid of density one-tenth that of the bob. The liquid is non-viscous. Now the period of the same pendulum, remaining all the time immersed in the liquid, will be,
Answer» A simple pendulum with a solid metal bob has time period $T$ . The metal bob is now completely immersed in a liquid of density one-tenth that of the bob. The liquid is non-viscous. Now the period of the same pendulum, remaining all the time immersed in the liquid, will be,

Discussion

3.	∫√1+x29 dx is equal to(where C is integration constant)
Answer» $\int \sqrt{1 + \frac{x^{2}}{9}} d x$ is equal to (where $C$ is integration constant)

Discussion

4.	Consider the potentiometer circuit shown in the figure below. The potentiometer wire is 600 cm long. At what distance from point A should the jockey be placed to get zero deflection in the galvanometer?
Answer» Consider the potentiometer circuit shown in the figure below. The potentiometer wire is 600 cm long. At what distance from point A should the jockey be placed to get zero deflection in the galvanometer?

Discussion

5.	If →a and →b are two vectros such that 2\|→a\|=\|→b\|, then the greatest value of \|2→a+→b\|+\|2→a−→b\| is equal to
Answer» If $\to a$ and $\to b$ are two vectros such that $2 \| \to a \| = \| \to b \|,$ then the greatest value of $\| 2 \to a + \to b \| + \| 2 \to a - \to b \|$ is equal to

Discussion

6.	A man of mass 40 kg is standing on a platform of mass 60 kg kept on a smooth horizontal surface. The man starts moving on the platform with a velocity 20 m/s relative to the platform. The recoil velocity of the platform is
Answer» A man of mass $40 kg$ is standing on a platform of mass $60 kg$ kept on a smooth horizontal surface. The man starts moving on the platform with a velocity $20 m/s$ relative to the platform. The recoil velocity of the platform is

Discussion

7.	A bulb of power 100 W that radiates light isotropically(equally in all directions) has dimensions so small compared to the distances in question that the source can be assumed to be a point source. Find the intensity 10 m away from it?
Answer» A bulb of power 100 W that radiates light isotropically(equally in all directions) has dimensions so small compared to the distances in question that the source can be assumed to be a point source. Find the intensity 10 m away from it?

7.

A bulb of power 100 W that radiates light isotropically(equally in all directions) has dimensions so small compared to the distances in question that the source can be assumed to be a point source. Find the intensity 10 m away from it?

Answer»

A bulb of power 100 W that radiates light isotropically(equally in all directions) has dimensions so small compared to the distances in question that the source can be assumed to be a point source.

Find the intensity 10 m away from it?

Discussion

8.	102.The electric potential in some region is expressed by V=6x - 8xy2 - 8y + 6yz - 4z2 volt. The magnitude of force acting on a charge of 2C situated at the origin will be
Answer» 102.The electric potential in some region is expressed by V=6x - 8xy2 - 8y + 6yz - 4z2 volt. The magnitude of force acting on a charge of 2C situated at the origin will be

Discussion

9.	in straight line motion → Average velocity can be 0 → average speed can be non 0 → both (1) and (2) are possible → average velocity can't be 0
Answer» in straight line motion → Average velocity can be 0 → average speed can be non 0 → both (1) and (2) are possible → average velocity can't be 0

Discussion

10.	5. In Y.D.S.E., the slits are 0.2 cm apart & are illuminated by yellow light ( 600 nm). What would be the fringe width on a screen placed 1 m from the plane of the slits if the whole systemis immersed in water of index 4/3 (1) 0.225 mm(2) 2.25(2)2.25 mm
Answer» 5. In Y.D.S.E., the slits are 0.2 cm apart & are illuminated by yellow light ( 600 nm). What would be the fringe width on a screen placed 1 m from the plane of the slits if the whole systemis immersed in water of index 4/3 (1) 0.225 mm(2) 2.25(2)2.25 mm

Discussion

11.	68. Consider the charge configuration and a spherical gaussian surface as shown in the figure .when calculating the flux due to electric field over the spherical surface the the electric will be due to which charge
Answer» 68. Consider the charge configuration and a spherical gaussian surface as shown in the figure .when calculating the flux due to electric field over the spherical surface the the electric will be due to which charge

Discussion

12.	40. Calculate the time period of a simple pendulum whose length is equal to radius of earthHint : L = Re = 6.4 × 106 m, g = 9.8 ms-2
Answer» 40. Calculate the time period of a simple pendulum whose length is equal to radius of earthHint : L = Re = 6.4 × 106 m, g = 9.8 ms-2

Discussion

13.	a 3 micro farad capacitor is charged to a potential of 100v and 2 micro farad is charged to 100v. the capacitors are then connected in parallel with opposite polarities joined together .the amount of charge flown is
Answer» a 3 micro farad capacitor is charged to a potential of 100v and 2 micro farad is charged to 100v. the capacitors are then connected in parallel with opposite polarities joined together .the amount of charge flown is

Discussion

14.	A ring of radius R having a linear charge density λ moves towards a solid imaginary sphere of radius R2, so that the centre of the ring passes through the centre of sphere. The axis of the ring is perpendicular to the line joining the centres of the ring and the sphere. The maximum flux through the sphere in this process is
Answer» A ring of radius $R$ having a linear charge density $λ$ moves towards a solid imaginary sphere of radius $\frac{R}{2}$ , so that the centre of the ring passes through the centre of sphere. The axis of the ring is perpendicular to the line joining the centres of the ring and the sphere. The maximum flux through the sphere in this process is

Discussion

15.	The Young's double slit experiment is performed with blue light and green light of wavelength 4360˙A and 5460˙A a respectively. If X is the distance of 4th maxima, from the central one, then:
Answer» The Young's double slit experiment is performed with blue light and green light of wavelength $4360 ˙ A$ and $5460 ˙ A$ a respectively. If X is the distance of $4^{t h}$ maxima, from the central one, then:

Discussion

16.	The least count of the main scale of a screw gauge is 1 mm. The minimum number of divisions on its circular scale required to measure 5 μm diameter of a wire is:
Answer» The least count of the main scale of a screw gauge is $1 mm$ . The minimum number of divisions on its circular scale required to measure $5 μ m$ diameter of a wire is:

Discussion

17.	13.What is the electric field at centre of uniformly charged quarter circle
Answer» 13.What is the electric field at centre of uniformly charged quarter circle

Discussion

18.	Which types of lenses are used in telescope. With diagram.
Answer» Which types of lenses are used in telescope. With diagram.

Discussion

19.	A body of mass 1 kg begins to move under the action of a time dependent force →F=(2t^i+3t2^j) N. Calculate the instantaneous power developed at time t ?
Answer» A body of mass $1 kg$ begins to move under the action of a time dependent force $\to F = (2 t^i + 3 t^{2}^j) N$ . Calculate the instantaneous power developed at time $t$ ?

Discussion

20.	The average velocity of the object over the time interval (2 s to 4 s) will be (here x is the position of the object)
Answer» The average velocity of the object over the time interval ( $2 s$ to $4 s$ ) will be (here $x$ is the position of the object)

Discussion

21.	A transmitting station releases waves of wavelength 960 m. A capacitor of capacitance 2.56 μF is used in the resonant circuit. The self inductance of the coil necessary for resonance is _______×10−8 H.
Answer» A transmitting station releases waves of wavelength $960 m$ . A capacitor of capacitance $2.56 μ F$ is used in the resonant circuit. The self inductance of the coil necessary for resonance is _______ $\times 10^{- 8} H$ .

Discussion

22.	Two particles having mass ratio n:1 are interconnected by a light inextensible string that passes over a smooth pulley. If the system is released, then the acceleration of the centre of mass of the system is :
Answer» Two particles having mass ratio $n : 1$ are interconnected by a light inextensible string that passes over a smooth pulley. If the system is released, then the acceleration of the centre of mass of the system is :

Discussion

23.	4.) The maximum vertical distance through which a full { dressed astronaut can jump on the earth is 0.5m . Estimate the maximum vertical distance through which he can jump on the moon, which has a { mean density 2/3rd that of the earth and radius one quarter that of the earth.
Answer» 4.) The maximum vertical distance through which a full { dressed astronaut can jump on the earth is 0.5m . Estimate the maximum vertical distance through which he can jump on the moon, which has a { mean density 2/3rd that of the earth and radius one quarter that of the earth.

Discussion

24.	Two inductors having self inductances, 2 mH and 8 mH are arranged such that the mutual inductance is 2 mH. Find the coupling constant.
Answer» Two inductors having self inductances, $2 mH$ and $8 mH$ are arranged such that the mutual inductance is $2 mH$ . Find the coupling constant.

Discussion

25.	A particle with restoring force proportional to displacement and resisting force proportional to velocity is subjected to a force Fsinwt . If the amplitude of the particle is maximum for w=w1 and energy of the particle is maximum for w=w2 ,then (where w° is natural frequency of oscillation of particle) (a)w1=w° and w2not=w° (b)w1=w° & w2=w° (c) w1 not=w° & w2=w° (d)w1not=w° & w2 not=w°
Answer» A particle with restoring force proportional to displacement and resisting force proportional to velocity is subjected to a force Fsinwt . If the amplitude of the particle is maximum for w=w1 and energy of the particle is maximum for w=w2 ,then (where w° is natural frequency of oscillation of particle) (a)w1=w° and w2not=w° (b)w1=w° & w2=w° (c) w1 not=w° & w2=w° (d)w1not=w° & w2 not=w°

Discussion

26.	An inductor coil stores 0.25 J of energy when current i is passed through it and dissipates the energy at the rate of 0.5 W. The time constant of the circuit, when this coil is connected across a battery of zero internal resistance, is :
Answer» An inductor coil stores $0.25 J$ of energy when current $i$ is passed through it and dissipates the energy at the rate of $0.5 W$ . The time constant of the circuit, when this coil is connected across a battery of zero internal resistance, is :

Discussion

27.	A conducting loop of resistance R and radius ‘r’ has its center at the origin of the co-ordinate system in a magnetic field of induction B. When it is rotated about Y-axis through 90°, net charge flown in the coil is directly proportional to
Answer» A conducting loop of resistance R and radius ‘r’ has its center at the origin of the co-ordinate system in a magnetic field of induction B. When it is rotated about Y-axis through 90°, net charge flown in the coil is directly proportional to

27.

A conducting loop of resistance R and radius ‘r’ has its center at the origin of the co-ordinate system in a magnetic field of induction B. When it is rotated about Y-axis through 90°, net charge flown in the coil is directly proportional to

Answer»

A conducting loop of resistance R and radius ‘r’ has its center at the origin of the co-ordinate system in a magnetic field of induction B. When it is rotated about Y-axis through 90°, net charge flown in the coil is directly proportional to

Discussion

28.	29. A body is moving towards east with speed 4 m/sec. Turn to north with same speed in 2 sec. Then calculate the acceleration ? ( With a suitable diagram )
Answer» 29. A body is moving towards east with speed 4 m/sec. Turn to north with same speed in 2 sec. Then calculate the acceleration ? ( With a suitable diagram )

Discussion

29.	Consider two satellites, S1 and S2 with periods of revolution, 1 hr and 8 hr respectively revolving around a planet in circular orbits. The ratio of angular velocity of satellite S1 to the angular velocity of satellite S2 is
Answer» Consider two satellites, $S_{1}$ and $S_{2}$ with periods of revolution, $1 hr$ and $8 hr$ respectively revolving around a planet in circular orbits. The ratio of angular velocity of satellite $S_{1}$ to the angular velocity of satellite $S_{2}$ is

Discussion

30.	A rectangular lamina of mass 20 kg having sides 6 m and 3 m is placed on the horizontal surface. Find moment of inertia of the lamina about the axis passing through the center and perpendicular to its plane.
Answer» A rectangular lamina of mass $20 kg$ having sides $6 m$ and $3 m$ is placed on the horizontal surface. Find moment of inertia of the lamina about the axis passing through the center and perpendicular to its plane.

Discussion

31.	If a particle is moving such that its velocity is given by v=√2KS, where K is positive constant, then velocity at t = 1 s is
Answer» If a particle is moving such that its velocity is given by v=√2KS, where K is positive constant, then velocity at t = 1 s is

Discussion

32.	An electric dipole with dipole moment 4 × 10–9 C m is aligned at 30°with the direction of a uniform electric field of magnitude 5 × 104 NC–1.Calculate the magnitude of the torque acting on the dipole.
Answer» An electric dipole with dipole moment 4 × 10–9 C m is aligned at 30°with the direction of a uniform electric field of magnitude 5 × 104 NC–1.Calculate the magnitude of the torque acting on the dipole.

Discussion

33.	A sound wave has a frequency of 2KHz and wavelength of 45cm. It takes 4 seconds to travel. Calculate the distance it travels.
Answer» A sound wave has a frequency of 2KHz and wavelength of 45cm. It takes 4 seconds to travel. Calculate the distance it travels.

Discussion

34.	Find the dimensions of (a) electri field E, (b) magnetic field B and (c) magnetic permeability μ0. The relevant equations are F=qE, F=qvB, and B=μ0I2πa where F is force, q is charge, v is speed, I is current, and a is distance.
Answer» Find the dimensions of (a) electri field E, (b) magnetic field B and (c) magnetic permeability $μ_{0}$ . The relevant equations are $F = q E, F = q v B,$ and $B = \frac{μ_{0} I}{2 π a}$ where F is force, q is charge, v is speed, I is current, and a is distance.

34.

Find the dimensions of (a) electri field E, (b) magnetic field B and (c) magnetic permeability μ0. The relevant equations are F=qE, F=qvB, and B=μ0I2πa where F is force, q is charge, v is speed, I is current, and a is distance.

Answer»

Find the dimensions of

(a) electri field E,

(b) magnetic field B and

(c) magnetic permeability $μ_{0}$ .

The relevant equations are

$F = q E, F = q v B,$ and $B = \frac{μ_{0} I}{2 π a}$

where F is force, q is charge, v is speed, I is current, and a is distance.

Discussion

35.	A4 µF capacitor is charged by a 200 V supply. It is thendisconnected from the supply, and is connected to another uncharged 2µF capacitor. How much electrostatic energy of the firstcapacitor is lost in the form of heat and electromagnetic radiation?
Answer» A 4 µF capacitor is charged by a 200 V supply. It is then disconnected from the supply, and is connected to another uncharged 2 µF capacitor. How much electrostatic energy of the first capacitor is lost in the form of heat and electromagnetic radiation?

Discussion

36.	Thefission properties of arevery similar to those of.Theaverage energy released per fission is 180 MeV. How much energy, inMeV, is released if all the atoms in 1 kg of pure undergofission?
Answer» The fission properties of are very similar to those of. The average energy released per fission is 180 MeV. How much energy, in MeV, is released if all the atoms in 1 kg of pure undergo fission?

36.

Thefission properties of arevery similar to those of.Theaverage energy released per fission is 180 MeV. How much energy, inMeV, is released if all the atoms in 1 kg of pure undergofission?

Answer»

The
fission properties of
are
very similar to those of.

The
average energy released per fission is 180 MeV. How much energy, in
MeV, is released if all the atoms in 1 kg of pure
undergo
fission?

Discussion

37.	The magnitude of the resistance of the resistor in series with the coil of the voltmeter should be
Answer» The magnitude of the resistance of the resistor in series with the coil of the voltmeter should be

Discussion

38.	six point charges are placed at the vertices of a regular hexagon of side 1m as shown in the figure net electric field at the center of the hexagon
Answer» six point charges are placed at the vertices of a regular hexagon of side 1m as shown in the figure net electric field at the center of the hexagon

Discussion

39.	102.A particle is projected whose max height is 40m . Find max range of the particle and time of flight in that case
Answer» 102.A particle is projected whose max height is 40m . Find max range of the particle and time of flight in that case

Discussion

40.	Calculate the dimensional formula for coefficient of viscosity?
Answer» Calculate the dimensional formula for coefficient of viscosity?

Discussion

41.	A table clock has its minute hand 4 cm long. Find the average velocity of the tip of the minute hand (a) between 6 AM to 6:30 AM and (b) between 6 AM to 6:30 PM
Answer» A table clock has its minute hand $4 c m$ long. Find the average velocity of the tip of the minute hand (a) between 6 AM to 6:30 AM and (b) between 6 AM to 6:30 PM

Discussion

42.	A spring is initially compressed by 2 m. Find out the work done required to compress another 6 m if spring constant k=2 N/m.
Answer» A spring is initially compressed by $2 m$ . Find out the work done required to compress another $6 m$ if spring constant $k = 2 N/m$ .

Discussion

43.	Find the minimum value of coefficient of friction between the 6 kg block and the surface if the system shown does not accelerate.
Answer» Find the minimum value of coefficient of friction between the $6 k g$ block and the surface if the system shown does not accelerate.

Discussion

44.	David is observing his image in a plane mirror. The distance between the mirror and his image is 4 m. If he moves 1 m towards the mirror, then the distance between David and his image will be
Answer» David is observing his image in a plane mirror. The distance between the mirror and his image is $4 m$ . If he moves $1 m$ towards the mirror, then the distance between David and his image will be

Discussion

45.	there is a cricket bat which is cut form its centre of mass perpendicular to longitudinal axis ofbat.which part ofbat wil have more mass? Part having the handle or part opp to it
Answer» there is a cricket bat which is cut form its centre of mass perpendicular to longitudinal axis ofbat.which part ofbat wil have more mass? Part having the handle or part opp to it

Discussion

46.	The waveform given below when applied to the following circuit will produce which of the following output waveform? Assume ideal diode configuration and R1=R2
Answer» The waveform given below when applied to the following circuit will produce which of the following output waveform? Assume ideal diode configuration and R1=R2

Discussion

47.	the velocities of A and B are\xrightarrow[v_a]{}=2icap++4jcap and \xrightarrow[v_b]{} =3icap-7jcap.velocity of B as observed by A i
Answer» the velocities of A and B are\xrightarrow[v_a]{}=2icap++4jcap and \xrightarrow[v_b]{} =3icap-7jcap.velocity of B as observed by A i

Discussion

48.	The ratio of time constants in charging and discharging of inductor in the circuit shown in figure is
Answer» The ratio of time constants in charging and discharging of inductor in the circuit shown in figure is

Discussion

49.	Calculate the ionization energy and separation energy for Li2+ ion if electron is in second excited state.
Answer» Calculate the ionization energy and separation energy for Li2+ ion if electron is in second excited state.

Discussion

50.	Consider a causal LTI system characterized by differential equation dy(t)dt+4y(t)=2x(t)The steady state output y(t) is A sin (4t+Φ) for the input ej4t−e−j4tj then the value of A is ___. (Answer upto two decimal places) 0.71
Answer» $Consider a causal LTI system characterized by differential equation \frac{d y (t)}{d t} + 4 y (t) = 2 x (t)$ $The steady state output y(t) is A sin (4 t + Φ) for the input \frac{e^{j 4 t} - e^{- j 4 t}}{j} then the value of A is ___.$ $(Answer upto two decimal places)$ 0.71

Discussion

Explore topic-wise InterviewSolutions in Current Affairs.

4.The ceiling of a long hall is 25m high.what is the maximum horizontal distance that a ball thrown with a speed of 40m/s can go without hitting the ceiling of the hall?

A simple pendulum with a solid metal bob has time period T. The metal bob is now completely immersed in a liquid of density one-tenth that of the bob. The liquid is non-viscous. Now the period of the same pendulum, remaining all the time immersed in the liquid, will be,

∫√1+x29 dx is equal to(where C is integration constant)

Consider the potentiometer circuit shown in the figure below. The potentiometer wire is 600 cm long. At what distance from point A should the jockey be placed to get zero deflection in the galvanometer?

If →a and →b are two vectros such that 2|→a|=|→b|, then the greatest value of |2→a+→b|+|2→a−→b| is equal to

A man of mass 40 kg is standing on a platform of mass 60 kg kept on a smooth horizontal surface. The man starts moving on the platform with a velocity 20 m/s relative to the platform. The recoil velocity of the platform is

A bulb of power 100 W that radiates light isotropically(equally in all directions) has dimensions so small compared to the distances in question that the source can be assumed to be a point source. Find the intensity 10 m away from it?

102.The electric potential in some region is expressed by V=6x - 8xy2 - 8y + 6yz - 4z2 volt. The magnitude of force acting on a charge of 2C situated at the origin will be

in straight line motion → Average velocity can be 0 → average speed can be non 0 → both (1) and (2) are possible → average velocity can't be 0

5. In Y.D.S.E., the slits are 0.2 cm apart & are illuminated by yellow light ( 600 nm). What would be the fringe width on a screen placed 1 m from the plane of the slits if the whole systemis immersed in water of index 4/3 (1) 0.225 mm(2) 2.25(2)2.25 mm

68. Consider the charge configuration and a spherical gaussian surface as shown in the figure .when calculating the flux due to electric field over the spherical surface the the electric will be due to which charge

40. Calculate the time period of a simple pendulum whose length is equal to radius of earthHint : L = Re = 6.4 × 106 m, g = 9.8 ms-2

a 3 micro farad capacitor is charged to a potential of 100v and 2 micro farad is charged to 100v. the capacitors are then connected in parallel with opposite polarities joined together .the amount of charge flown is

The Young's double slit experiment is performed with blue light and green light of wavelength 4360˙A and 5460˙A a respectively. If X is the distance of 4th maxima, from the central one, then:

The least count of the main scale of a screw gauge is 1 mm. The minimum number of divisions on its circular scale required to measure 5 μm diameter of a wire is:

13.What is the electric field at centre of uniformly charged quarter circle

Which types of lenses are used in telescope. With diagram.

A body of mass 1 kg begins to move under the action of a time dependent force →F=(2t^i+3t2^j) N. Calculate the instantaneous power developed at time t ?

The average velocity of the object over the time interval (2 s to 4 s) will be (here x is the position of the object)

A transmitting station releases waves of wavelength 960 m. A capacitor of capacitance 2.56 μF is used in the resonant circuit. The self inductance of the coil necessary for resonance is _______×10−8 H.

Two particles having mass ratio n:1 are interconnected by a light inextensible string that passes over a smooth pulley. If the system is released, then the acceleration of the centre of mass of the system is :

4.) The maximum vertical distance through which a full { dressed astronaut can jump on the earth is 0.5m . Estimate the maximum vertical distance through which he can jump on the moon, which has a { mean density 2/3rd that of the earth and radius one quarter that of the earth.

Two inductors having self inductances, 2 mH and 8 mH are arranged such that the mutual inductance is 2 mH. Find the coupling constant.

An inductor coil stores 0.25 J of energy when current i is passed through it and dissipates the energy at the rate of 0.5 W. The time constant of the circuit, when this coil is connected across a battery of zero internal resistance, is :

A conducting loop of resistance R and radius ‘r’ has its center at the origin of the co-ordinate system in a magnetic field of induction B. When it is rotated about Y-axis through 90°, net charge flown in the coil is directly proportional to

29. A body is moving towards east with speed 4 m/sec. Turn to north with same speed in 2 sec. Then calculate the acceleration ? ( With a suitable diagram )

Consider two satellites, S1 and S2 with periods of revolution, 1 hr and 8 hr respectively revolving around a planet in circular orbits. The ratio of angular velocity of satellite S1 to the angular velocity of satellite S2 is

A rectangular lamina of mass 20 kg having sides 6 m and 3 m is placed on the horizontal surface. Find moment of inertia of the lamina about the axis passing through the center and perpendicular to its plane.

If a particle is moving such that its velocity is given by v=√2KS, where K is positive constant, then velocity at t = 1 s is

An electric dipole with dipole moment 4 × 10–9 C m is aligned at 30°with the direction of a uniform electric field of magnitude 5 × 104 NC–1.Calculate the magnitude of the torque acting on the dipole.

A sound wave has a frequency of 2KHz and wavelength of 45cm. It takes 4 seconds to travel. Calculate the distance it travels.

Find the dimensions of (a) electri field E, (b) magnetic field B and (c) magnetic permeability μ0. The relevant equations are F=qE, F=qvB, and B=μ0I2πa where F is force, q is charge, v is speed, I is current, and a is distance.

A4 µF capacitor is charged by a 200 V supply. It is thendisconnected from the supply, and is connected to another uncharged 2µF capacitor. How much electrostatic energy of the firstcapacitor is lost in the form of heat and electromagnetic radiation?

Thefission properties of arevery similar to those of.Theaverage energy released per fission is 180 MeV. How much energy, inMeV, is released if all the atoms in 1 kg of pure undergofission?

The magnitude of the resistance of the resistor in series with the coil of the voltmeter should be

six point charges are placed at the vertices of a regular hexagon of side 1m as shown in the figure net electric field at the center of the hexagon

102.A particle is projected whose max height is 40m . Find max range of the particle and time of flight in that case

Calculate the dimensional formula for coefficient of viscosity?

A table clock has its minute hand 4 cm long. Find the average velocity of the tip of the minute hand (a) between 6 AM to 6:30 AM and (b) between 6 AM to 6:30 PM

A spring is initially compressed by 2 m. Find out the work done required to compress another 6 m if spring constant k=2 N/m.

Find the minimum value of coefficient of friction between the 6 kg block and the surface if the system shown does not accelerate.

David is observing his image in a plane mirror. The distance between the mirror and his image is 4 m. If he moves 1 m towards the mirror, then the distance between David and his image will be

there is a cricket bat which is cut form its centre of mass perpendicular to longitudinal axis ofbat.which part ofbat wil have more mass? Part having the handle or part opp to it

The waveform given below when applied to the following circuit will produce which of the following output waveform? Assume ideal diode configuration and R1=R2

the velocities of A and B are\xrightarrow[v_a]{}=2icap++4jcap and \xrightarrow[v_b]{} =3icap-7jcap.velocity of B as observed by A i

The ratio of time constants in charging and discharging of inductor in the circuit shown in figure is

Calculate the ionization energy and separation energy for Li2+ ion if electron is in second excited state.

Consider a causal LTI system characterized by differential equation dy(t)dt+4y(t)=2x(t)The steady state output y(t) is A sin (4t+Φ) for the input ej4t−e−j4tj then the value of A is ___. (Answer upto two decimal places) 0.71