Question

A ray incident at sphere an angle of incidence 60° enters a glass sphere of R.I m = $\sqrt { 3 }$. This ray is reflected and refracted at the farther surface of the sphere. The angle between reflected and refracted rays in this surface is –

• A. 90⁰
• B. 60⁰
• C. 70⁰
• D. 40⁰

Answer 1

Answer: (A)

90⁰

Answer 2

$\frac { \sin 60 ^ { \circ } } { \sin \theta }$ = $\frac { \sqrt { 3 } } { 1 }$

$\frac { \sqrt { 3 } } { 2 }$ = $\sqrt { 3 }$ sinq

sinq = ½

q = 30⁰

\ f = 90⁰