Question

The speed of light in medium A is 20 x 108ms-1 and that in medium B is 2.4 x 108ms-1. The critical angle of incidence for light tending to go from
medium A to medium B is
(A) sinº G
12
(B) sin? )
(C) sin (3)
(D) sin-1​

Answer 1

Answer:

$\longrightarrow \tt μ _{r} = \frac{2.4}{2.2} \\ \longrightarrow \tt \: critical \: angle \: of \sin ^{ - 1} = \sin ^{ - 1} \frac{1}{μ</p><p></p><p> _{r} } \\ \longrightarrow \tt \: sin ^{ - 1 } \frac{11}{12} </p><p>$