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

2 radian = ____

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2 m

4 m

57.3 m

114.6 m

An immediate source of energy for our body is:

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mango

Glucose

mushroom

meat

Time taken by light to reach from sun to earth is.

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8 min 20 sec

7 min 20 sec

9 min 20 sec

None of these

Vector has both of its components are negative lies in

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1st quadrant

2nd quadrant

3rd quadrant

4th quadrant

Damping is the process in which energy

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Increases

Remains constant

Dissipates

None of these

A bat finding its correct location by sending

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Matter waves

Ultrasonic waves

Infrasonic waves

electromagnetic waves

This is used for

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Co-efficient of friction

Co-efficient of expansion

Co-efficient of viscosity

Co-efficient of contraction

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.

During adiabatic process, which factor remains constant.

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Entropy

Pressure

Momentum

Power

When two identical waves superimposed, which can change.

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Wave length

Frequency

Velocity

Amplitude

Air blows from

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High pressure to low pressure

Low pressure to high pressure

Low temperature to high temperature

High temperature to low temperature

The frequency of 2nd pendulum is

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0.5 Hz

1 Hz

1.5 Hz

2 Hz

An oil film on water surface shows colour due to.

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Diffraction

Interference

Polarization

Dispersion

Number of seconds in a day is

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9000 sec

3600 sec

86400 sec

43200 sec

A direction of torque is

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Along the position vector r

Perpendicular to both r and f

Along the direction of force F

Opposite to the direction of r

Artificial gravity can be created in the space ship by

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Revolving around the earth

Spinning around its own axis

Increasing its velocity

Decreasing it svelocity

According to first law of thermodynamics the quantity which is conserved.

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Force

Momentum

Energy

Power

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