The cause of shining in diamond is

scattering of light

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refraction of light

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total internal reflection of light

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dispersion of light

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Solution

The correct options are
B dispersion of light
C total internal reflection of light
D refraction of light
An incident light gets refracted into the diamond crystal.
Dispersion causes the light to split into different colours that are seen in the diamond crystal.
Due to high refractive index of diamond(around 2.4), diamond has a very small critical angle. Thus most of the rays of light go multiple total internal reflections before they refract out of the crystal.

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Q. Assertion :The diamond shines due to multiple total internal reflections. Reason: The critical angle for diamond is

{24.4}^{0}

Q. Assertion :The diamond shines due to multiple total internal reflections. Reason: The critical angle for diamond is 24.4

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Q. Question 5
Which of the following phenomena of light are involved in the formation of a rainbow?

(a) Reflection, refraction and dispersion
(b) Refraction, dispersion and total internal reflection
(c) Refraction, dispersion and internal reflection
(d) Dispersion, scattering and total internal reflection

Question 10
Which of the following phenomena contributes significantly to the reddish appearance of the sun at sunrise or sunset?

(a) Dispersion of light
(b) Scattering of light
(c) Total internal reflection of light
(d) Reflection of light from the earth

Question 6
Twinkling of stars is due to atmospheric

(a) dispersion of light by water droplets
(b) refraction of light by different layers of varying refractive indices
(c) scattering of light by dust particles
(d) internal reflection of light by clouds

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