Question # 1

The heat required to raise the temperature of one mole of the substance through 1 K is called

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heat capacity

specific heat capacity

molar specific heat

all of them

The highest value reached by the voltage or current:

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In quarter cycle is called Instantaneous value

In half cycle is called peak-to-peak value

In one cycle is called peak value

In half cycle is called Instantaneous value

None of these

A 120 m long train is moving in a direction with speed 20 m/s. A train B moving with 30 m/s in the opposite direction and 130 m long crosses the first train in a time

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6 s

36 s

38 s

None of these

The concept of field theory was put forward by

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Franklin

Kepler

Oersted

Michael Faraday

Two bodies of masses 1 kg and 5 kg are dropped gently form the top of a tower. A a point 20 cm from the ground both the bodies will have the same

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Momentum

Kinetic energy

Velocity

Total energy

dimensions are the same for:

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Work and energy

Force and weight

None of these

Both a and b

A force of 50 dynes is acted on a body of mass 5 g which is at rest, for an interval of 3 seconds, then impulse is

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0.15 x 10^-3Ns

0.98 x 10^-3Ns

1.5 x 10^-3Ns

2.5 x 10^-3Ns

When a suitable small resistance is put in parallel with the galvanometer coil, it is converted into

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Voltmeter

Avometer

Ammeter

None of these

The S.I unit of frequency is

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Vibrations s^-2

Ms^-1

Hertz

s^-1

While describing the motion of a simple pendulum, the frictional effects are

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taken into account

completely ignored

partially ignored

none of them

In magnet-coil experiment, emf can be produced by:

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Keeping the coil stationary and moving the magnet

Keeping the magnet stationary and moving the coil

Relative motion of the loop and magnet

Any one of above

All above

Viscosity of air is

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0.019x10³ Nsm^-2

0.019x10^-3 N-sm^-2

0.019x10³ Nsm^-2

The relative permitivity ∈_r for rubber is

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2.8

3.0

2.90

2.94

The internal energy of a gram mole of an ideal gas depends upon

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Pressure alone

Volume alone

Temperature alone

Both pressure and temperature

In thrill machine rides at amusement parks, there can be an acceleration of

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2 g

3 g

More than 3 g

4 g

A frame of reference stationed on Earth in approximately an example of

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Inertial frame

Non-inertial frame

Every frame

None of these

On the ground the gravitational force on a satellite is W. What is the gravitational force on the satellite when at a height R/50,where R is the radius of the Earth

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1.02 W

1.00 W

0.98 W

0.96 W

Suppose the water flows out from a pipe at 3 kgs^-1and its velocity changes from 5 ms^-1to zero on striking the ball, then force is

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5.3 N

15 N

17.3 N

19.2 N

The work by the body is maximum when it has angle

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30^o

60^o

90^o

0^o

Stress may cause a change in:

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Length

Volume

Shape

Any of these

None of these

The medium in which speed of light is the same in all directions is called:

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Homogeneous

Heterogeneous

Non-homogeneous

Free space

In a semi-conductor material, current flows due to

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positive charge

negative charge

both of them

none of them

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