Question # 1

Laws of reflection and refraction can also be explained by

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Particle nature of light

Quantum nature of light

Wave nature of light

Complex nature of light

Light has

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Wave nature

Dual nature

Particle nature

None of them

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

The property of light which does not change with the nature of the medium is

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Frequency

Amplitude

Wavelength

None of these

Two sources are said to be coherent if they have

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Same amplitude

Same wavelength

Definite phase relation with each other

None of them

Speed of light in vacuum depends upon

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Frequency

Wavelength

Amplitude

None of these

The appearance of colours in the soap (or oil) film results from

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Dispersion

Interference

Reflection

Refraction

The speed of the secondary wavelets as mentioned in Huygen's principle is ________ the speed of propagation of the wave itself

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Equal to

Greater than

Smaller than

None of these

The terms phase difference and path difference are

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Same

Different

Equal

none of these

In case of constructive interference of two waves, the amplitude of the resultant wave is __________ either of the waves

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Greater than

Equal to

Smaller than

None of these

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

In case of point source of light, shape of wavefront is

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Spherical

Cylindrical

Plane

None of above

In YDS experiment, fringe spacing means the distance between two consecutive _________ fringes

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Bright

Dark

Any of A or B

None of these

Monochromatic light means wave of

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Same frequency

Same colour

Same Wavelength

All of them

Huygen principle is used to determine

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Speed of light

Location of wavefront

About polarized and unpolarized light

None of them

Huygen's principle states that

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Light travels in straight line

Light has dual nature

Either of these

None of these

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