Question

why does a diamond shine more than a glass piece cut to the same shape

Answer 1

Hey mate ^_^

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Answer:
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A diamond shines more because of the phenomenon of total internal reflection (TIR).

The refractive index of diamond is ≈2.4 and that of glass is ≈1.5.

By using the relation μ=1sin C, where C is the critical angle, we get refractive index (μ).

For a large refractive index, the value of the critical angle is small.

Thus, for the diamond, the critical angle for total internal reflection is much smaller than that of the glass.

Therefore, a great percentage of incident light gets internally reflected several times before it emerges out.

#Be Brainly❤️

Answer 2

$\red{HEY\:BUDDY!!}$

HERE'S THE ANSWER..

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♠️ This is due to

✔️ $\blue{Total \: internal \: reflection \: ( TIR )}$

⏺️ The cutting of diamond is done in such a way which creates suitable condition for TIR .

⏺️When light enters in a diamond , it keep reflection inside it and it looks shining .

⏺️ Conditions are

✔️ When light goes from denser to rares it refracts and bent towards normal , When and angle come when ray of light is on axis that angle is know as critical angle ( c )

✔️ When incident angle ( i ) is more that incident angle it reflects back to denser medium .

♠️ You will be able to understand clearly by above attachment.

HOPE HELPED..

$\red{JAI \:HIND..}$

:)