Question # 1

The unit of inductance is equivalent to

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V x s/A

V x A/s

A x s/v

V/A x s

Boyle's law is applicable in

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Isochoric process

Isothermal process

Isobaric process

Isotonic process

A moving charge will gain energy due to the application of

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Electric field

Magnetic field

Both of these

None of these

The force between two charges 0.06 m apart is 5 N. If each charge is moved towards the other by 0.01 m, then the force between them will become

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7.20 N

11.25 N

22.50 N

45.00

If the metal bob is a simple pendulum is replaced by a wooden bob, then its time period will

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Increas

Decreases

Remain the same

First A then B

A lens behaves as a converging lens in air and a diverging lens in water. The refractive index of the material is

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Equal to unity

Equal to 1.33

Between unity and 1.33

Greater than 1.33

The number of translation degrees of freedom for a diatomic gas is

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2

3

5

6

A body of mass 2 kg is thrown up vertically with K.E. of 490 joules. If the acceleration due to gravity is 9.8 m/s², the height at which the K.E, of the body becomes half its original value is given by:

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50 m

12.5 m

25 m

10 m

Which one of the following phenomena is not explained by Hugen's construction of wavefront?

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Refraction

Reflection

Diffraction

Origin of sepectra

A ten-ohm electric heater operates on a 110 V line. Calculate the rate at which it develops heat in watts:

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1310 W

670 W

810 W

1210 W

A (100 W, 200 V) bulb is connected to a 160 V power supply. The power consumption would be

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64 W

80 W

100 W

125 W

Two forces of 10N and 15N are acting simultaneously on an object in the same direction. Their resultant is

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Zero

5N

25N

150N

How much water a pump of 2kW can raise in one minute to a height of 10 m, take g = 10 m/s²?

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1000 liters

1200 liters

100 liters

2000 liters

If tube length of astronomical telescope is 105 cm and magnifying power is 20 for normal setting. Calculate the focal length of objective

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100 cm

10 cm

20 cm

25 cm

At a certain instant a stationary transverse wave is found to have maximum kinetic energy. The appearance of string of that instant is:

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Sinusoidal shape with amplitude A/3

Sinusoidal shape with amplitude A/2

Sinusoidal shape with amplitude A

Straight line

A photoelectric cell coverts

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Electrical energy to light energy

Light energy to light energy

Light energy to electrical energy

Light energy to elastic energy

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