Question # 1

The amplitude of a vibrating body at resonance in vacuum is

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Minimum

Maximum

Zero

Infinite

If a rocket is accelerating upward with an acceleration of 2 g, an astronaut of weight, mg in the rocket shows apparent weight.

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Zero

Mg

2 mg

3 mg

Two tuning forks of frequencies 240 Hz and 243 Hz are sounded together, the number of beats per second is.

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Zero

2

3

4

the velocity of sound at 0 ^oC is 332 ms-1, the velocity of sound at 10 ^oC will be

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337.1 ms-1

338.1 ,ms-1

342.1 ms-1

328.1 ms-1

The rate of change of momentum is equal to

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Impulse

Torque

Velocity

Force

In thermodynamics system internal energy decrease by 100 J and 100 J of work done on the system then heat lost will be.

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Zero

100 J

200 J

-200 J

The phenomenon of polarization of light reveals that sun light is

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Longitudinal waves

Transverse wave

Electromagnetic waves

Monochromatic wave

Which remains constant in an adiabatic process.

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Volume

Pressure

entropy

temperature

The unit of work in base unit is

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Kg m-1 sec-2

Kgm sec-2

Kgm2 sec-1

Kgm-1 sec-1

Rate of change of displacement is called

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Speed

Velocity

Kinetic energy

None of these

According to Hygen's principle, each point on a wave front acts as a source of.

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Secondary wavelet

New wave front

Sound

Primary wavelet

The branch of physics which deals with the properties of gravitational field, electromagnetic field and nuclear field is called.

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Aerodynamics

Field theory

Acorestics

Hydrodynamics

the velocity of sound is maximum at 20 ^oC in

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Lead

Copper

Glass

Iron

The apparent change in the pitch of sound due to relative motion is called.

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Carnot theorem

Interference

Doppler effect

Beats

Speed of sound in aluminum at 20 ^oC is.

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3600 m/s

5100 m/s

5130 m/s

3500 m/s

Engineering physics, Astrophysics,Bio Physics and Geophysics are

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Branches of Physics

Branches of Chemistry

Applied Physics

None of these

Viscosity is represented by Greek letter

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Work is a

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Scalar quantity

Vector quantity

Basic quantity

None of these

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