Question # 1

The word Fluid means

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To rise

To fall

To flow

To oppose

Mercury is used as a thermometric substance because

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It is opaque

Does not stick to glass

Has low specific heat

All of these

The unit of energy is same as that of

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Power

Work

Torque

Density

The time rate of change of angular displacements called.

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Linear velocity

Linear speed

Angular velocity

Angular speed

Angular acceleration is produced by

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Power

Torque

Pressure

Force

The rate of change of momentum is equal to

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Impulse

Torque

Velocity

Force

An athlete runs with a speed of 12 ms-1. Determine the longest jump he can undertake.

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12 m

14.4 m

24 m

16.2 m

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 numer of significant figureswith the increases accracy of the measuring instrument

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Decreases

Remains unchanged

Increasees

None of these

Carnot cycle consists of.

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Two steps

Three steps

Four steps

Five steps

2 radian = ____

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2 m

4 m

57.3 m

114.6 m

The speed of sound in air would become double than ots speed at 10^oC at a temperature of.

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313 ^oC

586 ^oC

859^oC

899 ^oC

The property of bending of light around obstacles is

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Interference

Diffraction

Polarization

Superposition

A Carnot engine has an efficiency of 50% when its sink temperature is at 27 ^oC. The temperature of source.

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273^oC

300 ^oC

327 ^oC

373 ^oC

When a body is moving along a circular path, then such a motion is called

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Vibratory motion

Rotatory motion

Linear motion

None of these

Angular momentum has the same unit as

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Impulse x distance

Power x time

Linear x time

work x frequency

For a gas obeying Boyle's Law, if the pressure is doubled, the volume becomes.

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Double

Three fold

One half

Remains the same

Two quantities involved in work are

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Force and speed

Force and velocity

Force and displacement

Force and acceleration

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