Question # 1

The direction of angular acceleration is

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Along the axis of rotation

Perpendicular to the axis of rotation

Opposite to axis of rotation

None of these

The shortest distance between two points is called

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Distance

Amplitude

Displacement

Is a number

Standard metal according to Michelson's interferometer is equivalent to

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1553163.5 wave meter

3 x 108meter

15503000 meter

None of these

X-ray diffraction has been very useful in determining the structure of

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Hemoglobin

Stars

Galaxies

Stones

Torricelli's theorem is given by

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The product of cross sectional area of a pipe and speed of fluid along the pipe is

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Zero

Maximum

Constant

Variable

10 waves pass through a point in 2 seconds with speed 10 ms-1 the frequency of wave will be

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1 Hz

2 Hz

5 Hz

10 Hz

The angular acceleration a =

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Sound wave can not be

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Reflected

Refracted

Diffracted

Polarized

Which one of the scientist made some contribution to geometrical optics?

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Phythagoras

Archimedes

Euclid

Plato

The dot product of two vectors A and B will be zero, if angle between A and B is

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Zero

30^o

90^o

180^o

If heat engine absorb 400 J and rejects 200 J heat energy, its efficiency will be.

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25%

50%

70%

100%

In reversible process the entropy of system.

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Remain constant

Decrease

Increase

Becomes zero

The efficiency of diesel engine is about

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25 % to 30%

35% to 40%

40% to 50%

50% to 60%

Bio mass is converted into fuel by

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Evaporation

Fermentation

Reflection

Scattering

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

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Carnot theorem

Interference

Doppler effect

Beats

The word Fluid means

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To rise

To fall

To flow

To oppose

If the temperature of a gas is constant then <1/2 mv2> of the molecules of gas will be.

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Constant

Zero

Increase

Decrease

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