Question # 1

Electromagnetic waves transport

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Energy only

Momentum only

Both A and B

None is correct

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

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

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Spherical

Cylindrical

Plane

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

The terms phase difference and path difference are

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Same

Different

Equal

none of these

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

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Dispersion

Interference

Reflection

Refraction

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

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Dispersion

Interference

Reflection

Refraction

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

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

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

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Smaller

Longer

Equal

None of these

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

Speed of light in vacuum depends upon

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Frequency

Wavelength

Amplitude

None of these

Light waves are

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Mechanical waves

Electromagnetic waves

Any of above

None of above

Light has

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Wave nature

Dual nature

Particle nature

None of them

To observe interference of light, the condition, which must be met with is that the sources must be

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Monochromatic

Phase coherent

Both of above

None of above

Angle between ray of light and the corresponding wavefront is

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0⁰

60⁰

90⁰

120⁰

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