Question

if refractive index of the material of the prism is equal to that of surroundings, then the angle of deviation is​

Answer 1

Answer:

if the refractive index of the prism is equal to that of surroundings , them the angle of deviation is 180 degrees

Explanation:

for a light ray to bend either towards or away from the normal , there must be a difference in the refractive index of the two media. since the refractive index of both the media is same , the light ray does not bend and follows a straight line path. hence , the angle of deviation is 180 degrees