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In Figure, light is incident at an angle...

In Figure, light is incident at an angle `theta` which is slightly greater than the critical angle. Now, keeping the incident angle fixed a parallel slab or refractive index `n_(3)` is placed on surface AB. Which of the following statements are correct?

A

total internal reflection occurs at AB for `n_(3)ltn_(1)`

B

total internal reflection occurs at AB for `n_(3)gtn_(1)`

C

the ray will return back to the same medium for all values of `n_(3)`

D

total internal reflection occurs at CD for `n_(3)ltn_(1)`

Text Solution

Verified by Experts

The correct Answer is:
A, B, C
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