Question

What is the required condition, if the light incident on one face of a prism, does not emerge from the other face?

• A. n< coses $(\frac{A}{2})$
• B. n< sec $(\frac{A}{2})$
• C. n > sec A
• D. n > cosec $(\frac{A}{2})$

Answer 1

Answer: (D)

n > cosec $(\frac{A}{2})$

Answer 2

The correct option is (D) : n > cosec $(\frac{A}{2})$