The refractive index of a medium relative to air is 1.8. Calculate to the nearest degree, the critical angle for the medium

by Sunday | May 22 | Physics WAEC | 0 comments

A. 68°
B. 56°
C. 34°
D. 18°

Correct Answer: Option C

C. 34°

Explanation

C = sin‾¹ 1/n = sin‾¹ 1/1.8 =34°

Users Also Read These:

$A ray of light is incident at an angle of 30°on a glass prism of refractive index 1.5. Calculate the angle through which the ray is minimally deviated in the prism. (The medium surrounding the prism is air)$
A ray of light is incident at an angle of 30°on a…
$A beam of light is incident from air to water at an angle of 30°. Find the angle of refraction if the refractive index of water is 4/3?$
A beam of light is incident from air to water at an…
Assume that, for a certain country in a given year,…
A ray of light is incident on a plane mirror at an…
$If the refractive index of crown glass is 1.51; its critical angel is?$
If the refractive index of crown glass is 1.51; its…