Question # 1

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

The work done will be maximum when angle between F and d.

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180^o

0^o

90^o

60^o

S.I Unit of pressure of gas is.

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Nm

N.m

N2/m

N3m

Biomas is a potential source of

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Renewable energy

Non renewable energy

Botha a and b

Tidal energy

Two vector can be added by simple arithmetical method when they are at an angle of.

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120^o

90^o

0^o

45^o

Radar system is an application of.

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Chemical effect

Electric effect

Magnetic effect

Doppler's effect

In red light is used as compare to blue light then fringe spacing.

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Decreases

Remain same

Increases

Becomes zero

The slope of velocity time graph shows

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Total distance covered

Average acceleration

Instantaneous acceleration

Torque

A stationary waves is established din a string which vibrates in four segments at a frequency of 120 Hz, Its fundamental frequency is.

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15 Hz

30 HZ

60 Hz

480 Hz

The speed of sound in ari at 0 ^oC is 332 ms-1, Then the speed at 40 ^oC will be

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372 ms-1

356 ms-1

346 ms-1

332 ms-1

The frictional effect between the different layers of fluid is called

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Terminal velocity

Stock's law

Viscosity

Surface tension

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 equations of angular motion hold only in case when the axis of rotation is

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Moving

Fixed

Both a and b

None of these

In rotational motion the analogous of mass is

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Angular acceleration

Torque

Moment of inertia

Angular momentum

P.E. of a spring is stored in

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Spring

mass

Both of them

None of these

The concentration of red blood cells in the blood is nearly.

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40%

60%

25%

50%

The work done is isochoric process is.

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Constant

Variable

Zero

Depend upon condition

The angle between x-axis, y-axis and z-axis is

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45°

60°

75°

90°

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