Question # 1

Venturimeter is used ot measure.

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Speed of fluid

Pressure of fluid

Volume of fluid

Mass of fluid

Inertia may expressed in

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Kg

Newton

Watt

Joule

In order to produce beats, the two sound waves should have.

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The same amplitude

Slightly different amplitude

The same frequency

slightly different frequencies.

The experimental value for the velocity of sound in air is

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233 m-sec^-1

333 m-sec^-1

433 m-sec^-1

533 m-sec^-1

Soap film is sunlight appears coloured due to.

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Dispersion of light

Diffraction of light

Scattering of light

Interference fo light

The time period of an oscillating mass spring system is 10 second. If mass attached to spring id doubled then time period becomes.

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10 sec

20 sec

5 sec

None of these

The SI unit of work is

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Newton

Joule

Mol

Calorie

The mathematical expression for the restoring force is.

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F = kx

F = ma

F = dp/dt

F = -kx

Intensity of light depend on

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Wave length

Amplitude

Velocity

Frequency

For angular momentum of system to remain constant, external torque should be.

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Small

Large

Zero

None

Efficiency of a heat engine working between 27 ^oC and 32 ^oC will be.

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50%

90%

40%

62%

A gas performs 10 J of work while expanding adiabatically. the change in its internal energy is.

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10 J

-10 J

100 J

-200 J

If the slope of the velocity time graph remain constant then body is moving with.

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Uniform velocity

Negative variable acceleration

Variable acceleration

Uniform acceleration

The dimension of viscosity are

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[M2L-2T2]

[M-1LT-1]

[M-1L-1T]

[ML-1T-1]

2 radian = ____

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2 m

4 m

57.3 m

114.6 m

The mechanism of transports energy of all the waves is

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Different

Same

Complicated

Easy

SI units of time was redefined in

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1900

1967

1960

1983

A frame of reference stationed at the earth is an

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Inertial frame

None internal frame

Accelerated frame

Laboratory frame

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