Question # 1

The wave nature of light was proposed by

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Newton

Thomas Young

Huygen

None of these

Electromagnetic waves transport

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Energy only

Momentum only

Both A and B

None is correct

When the source of light is at very large distance, the shape of wavefront is

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Spherical

Cylindrical

Plane

None of these

Wavelength of light, on the average, is given by

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10^-14m

10^-10m

10^-6m

10^-4m

Huygen's principle states that

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Light travels in straight line

Light has dual nature

Either of these

None of these

In case of destructive interference of two waves, the amplitude of the resultant wave will be __________ either of the waves.

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Greater than

Smaller than

Equal to

None of these

Monochromatic light means wave of

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Same frequency

Same colour

Same Wavelength

All of them

Light waves are

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Mechanical waves

Electromagnetic waves

Any of above

None of above

The locus of all the points in the same phase of vibration is called

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Wave pocket

Wavefront

Wave number

None of these

Frequency of red colour as compared to that of violet colour is

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Equal

Smaller

Greater

None of these

Wavelength of red colour as compared to that of violet colour is

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Smaller

Longer

Equal

None of these

A line which represents the direction of travel of a wave is known as

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Spherical wavefront

Locus

Ray

Either B or C

Which one of the followings can act approximately as a source of monochromatic light

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Neon lamp

Fluorescent tube

Sodium lamp

None of these

Light waves are

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Transverse waves

Longitudinal waves

Compressional

None of them wave

In an interference pattern of Young's Double Slit (YDS) experiment

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Bright fringes are wider than dark fringes

Dark fringes are wider than bright fringes

Both dark and bright fringes are of equal width

Central fringes are wider than the outer fringes

Speed of light in vacuum depends upon

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Frequency

Wavelength

Amplitude

None of these

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