Question # 1

If the stream lines of fluid are forced closer together then.

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Speed of the fluid increases

Speed of the fluid decreases

Pressure of the fluid increases

Speed of the fluid remain same

Carnot cycle consists of.

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Two steps

Three steps

Four steps

Five steps

A set of frequencies which are multiples of the fundamental frequency are called.

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Doppler effect

Nodal frequencies

Beat frequencies

Hamonics

The efficiency of diesel engine is about

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25% to 30%

35% to 40%

40% to 50%

50% to 60%

When two identical travelling waves are superimposed, velocity of resultant wave.

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Decreases

Increases

Remain same

Becomes zero

The action and reaction never act on

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Same body

Two bodies

many bodies

All of these

Light waves are

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Longtail waves

Transvers waves

Stationary waves

Mechanical wave

The number of spark plug needed in diesel engine is

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0

2

3

4

The maximum velocity necessary to put a satellite into orbit is

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7.1 kms-1

7.3 kms-1

7.9 kms-1

8,9 kms-1

Two waves of same frequency and moving in the same direction produces.

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Interference

Diffraction

Beats

Stationary waves

The dimensions of work are.

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[MLT-1]

[MLT-2]

[ML2T-2]

[MLT]

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

When average velocity becomes equal to instantaneous than body is called moving with.

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Instantaneous acceleration

Constant acceleration

Constant velocity

Variable velocity

The regular or steady flow of fluid is called

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Stream line

Turbulent flow

Average flow

None of these

A body covers a distance of 10 m in 1 sec with a constant velocity of 10 ms-1 , Acceleration produced by the body is.

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0 ms-1

2 ms-2

5 ms-2

10 ms-2

Velocity of sound is independent of

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Temperature

Density

Pressure

Medium

A force of 10 N acts on a body of mass 5 kg in one second. The change in its momentum will be.

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10 kgms-1

50 kg ms-1

2 kg ms-1

20 kg ms-1

One mile is equal to

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1.625 km

1.609 km

1.325 km

1.850 km

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