Question # 1

The centre of Newton's rings will be

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Dark

Bright

Coloured

Not visible

Intensity of light depend on

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Wave length

Amplitude

Velocity

Frequency

Which one of the following can not be polarized.

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Ultra violet rays

Radio waves

T.V. Waves

Sound waves

A ray of light is a line

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Parallel to wave front

Normal to wave front

Anti-parallel to wave

Any one of these

Soap film is sunlight appears coloured due to.

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Dispersion of light

Diffraction of light

Scattering of light

Interference fo light

Angle between ray of light and wave front is

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0 ^o

60 ^o

90 ^o

120 ^o

The wavelength of X-rays is of the order of.

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10^-8 m

10^-10m

10^-5m

10^-4m

According to Huygen's principle the points on primary wave front can be considered as

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Secondary wavelets

Ray of light

Source of light

None of these

A ray of light shows the direction of propagation of light It is line which is.

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Normal to the wave front

Parallax to the wave front

Opposite to the wave front

Equal to the wave front

A typical diffraction grating has certain number of lines per centimeter whose range is.

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40 to 50

400 to 5000

400 to 500

4000 to 5000

The centre of Newton's fringe is dark due to.

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Destructive interference

Diffraction

Constructive interference

Polarization

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Physics English Medium Fsc Part 1 Chapter 9 Online MCQs Test MCQs With Answers

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