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Limiting angle of a prism is defined as ...

Limiting angle of a prism is defined as the largest angle of the prism (A) for which no emergent ray is obtained.
(a) Find the limiting angle `(A_(0))` for a glass prism having refractive index `mu`.
(b) A prism has limiting angle for light of wavelength `lambda_(0)`. Can there be any emergent ray for light of wave- length `lambda lt lambda_(0)`.

Text Solution

Verified by Experts

The correct Answer is:
(a) `A_(0) = 2 sin^(-1) ((1)/(mu))` (b) NO
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