Question # 1

The dimensional unit of impulse is.

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[MLT]

[MLT-1]

[ML-1T-1]

[M-1L-1T-1]

Before the launch of a rocket the mass of fuel of the rocket is approximately consists of.

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60%

50%

80%

100%

The moment of inertia is analogue to

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Mass

Weight

Torque

Force

A typical rocket consumes fuel about

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40000 Kgs-1

30000 Kgs-1

20000 Kg s-1

10000 Kgs-1

A force of 100 N makes an angle of 60o with Y- Axis, its horizontal component is.

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50 N

60 N

70.7 N

86.6 N

The light signal in Opticla fiber must be regenerated by advice called.

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Regenerator

Generator

Repeater

Diode

Speed of sound in copper is

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38000 ms-1

3600 ms-1

3500 ms-1

3400 ms-1

The measure of hotness or coldness of a substance is.

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Temperature

Heat

Internal energy

Energy

In the absence of air resistance the acceleration of a body will be

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Uniform

Variable

Instantaneous

None of these

For working of heat engine, there must be.

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A source

A sink

either of these

Both of these

Blood pressure is measured by

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Hydrometer

Barometer

Sphygmomanometer

Galvanometer

Michelson's interferometer can be used ot find the

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Velocity of light

Wavelength of light

Velocity of sound

Wavelength of sound

A bullet shot straight up, return to its starting point in 10 sec. Its initial speed was

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9.8 ms-1

24.5 ms-1

49 ms-1

98 ms-1

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

The potential energy to the molecules of an ideal gas is considered to be.

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Maximum

Zero

1/2 kx²

1/2 kx

In S.H.M, the acceleration of the body is directly proportional to

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Weight of body

Applied force

Amplitude

Displacement

The law of conservation of energy is the basis of.

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Stream line flow

Equation of continuity

Bernoulli's equation

Venture relation

A bat finding its correct location by sending

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Matter waves

Ultrasonic waves

Infrasonic waves

electromagnetic waves

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