Question

A light ray is incident on lower medium boundary at an angle ${30}^o$ with the normal. Which of following statement is/are TRUE?

• A. If ${\mu }_2>2$ then total deviation is ${60}^o$
• B. If ${\mu }_2<2$ then total deviation is ${60}^o$
• C. If ${\mu }_2>2$ then total deviation is ${120}^o$
• D. If ${\mu }_2<2$ then total deviation is ${120}^o$

Answer 1

Answer: (A), (D)

The correct options are
A If ${\mu }_2>2$ then total deviation is ${60}^o$
D If ${\mu }_2<2$ then total deviation is ${120}^o$