Question # 1

If the distance is nspring is 'x' of mass 'm' attached with a spring then restoring force is:

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F =ma

F =kx

F = mx

F= m/a

the waves have properties:

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reflection

refraction

diffraction

all of these

The sound waves are the example of:

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Longitudinal waves

Transverse waves

Electromagnetic waves

x-rays

Volt is named after the Italian physicist:

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Faraday

Alessandro volta

Newton

Coulomb

We can distinguish between the notes of a piano and flute due to ………… of sound.

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Loudness

Pitch

Quality

Intensity

Angle opposite to the base of triangle of prism is called:

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angle of incidence

angle of refraction

angle of prism

emerging angle

the power of washing machine is:

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700 W

750 W

650 W

800 W

The power of small fan is:

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40 W

50 W

60 W

80 W

In case of OR and AND operation, if switches s₁ and s₂ both are open then lamp is:

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On

Off

Sometimes on and sometimes off

Neither on nor off

The speed of sound was accurately measured in:

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1736

1737

1738

1739

The oscillations of a system in the presence of _____________ force are called amp oscillations:

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Resistive force

Attractive force

Both of these

None of these

The number of wavelength of waves passing through a point in one secnd is called:

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Time period

Cycle

Frequency

None of these

Safe limit of radiations exposure in one year.

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4 rem

5 rem

3 rem

6 rem

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