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There are three optical media 1,2 and 3 ...

There are three optical media 1,2 and 3 with their refractive index `mu_(1)`, `mu_(2)` and `mu_(3)` such that `mu_(1)gtmu_(2)gtmu_(3)` choose the correct options (TIR means total internal reflection)

A

When a ray of light travels from medium 3 to 1 no TIR can take place.

B

Critical angle between medium 1 and 2 is less then the critical angle between 1 and 3.

C

Critical angle between medium 1 and 2 is more then the critical angle between 1 and 3.

D

if `C_(1)` and `C_(2)` and `C_(3)` are the speed of light in medium 1,2 and 3 then `C_(1)ltC_(2)ltC_(3)`

Text Solution

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The correct Answer is:
A, B
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