Why does diamong sparkle?

The diamond has a very high refractive index 2 . 45 and hence low critical angle (about 24 ° ) Apart from this, it is cut in a special manner so that most of the light incident on it any internal faces have a higher angle of incidence than its critical angle This makes the light suffers multiple internal reflections from its inner faces. This makes the diamond shine.

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Gamma Question Bank for Medical Physics>Chapter 26 - Ray Optics and Optical Instruments>Assignment>Q 26

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Yellow light is refracted thorough a prism producing minimum deviation. If $i_{1}$ and $i_{2}$ denote the angle of incidence and emergence for this prism, then

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Important Questions on Ray Optics and Optical Instruments

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Gamma Question Bank for Medical Physics>Chapter 26 - Ray Optics and Optical Instruments>EXERCISE>Q 29

A prism of the refractive index

\sqrt{2}

has a refracting angle of

60 °

. At what angle a ray must be incident on it so that it suffers a minimum deviation?

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Gamma Question Bank for Medical Physics>Chapter 26 - Ray Optics and Optical Instruments>Assignment>Q 27

At what angle will a ray of light be incident on one face of an equilateral prism, so that the emergent ray may graze the second surface of the prism

(μ = 2) ?

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Gamma Question Bank for Medical Physics>Chapter 26 - Ray Optics and Optical Instruments>Assignment>Q 29

A glass prism of refractive index $1.5$ is immersed in water of refractive index $4 / 3 .$ A light ray incident normally on face $A B$ is totally reflected at face $A C$ if

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