Question

a light ray incident on a plane mirror if the angle of deviation is double that of angle of incidence what is the angle of incidence

Answer 1

HEY MATE!

HERE IS YOUR ANSWER

Since the angle of deviation, angle of incidence and the angle of reflection form 180° (angles on a straight line)

hence angle of incidence +angle of reflection+ angle of deviation=180°

angle of incidence = angle of reflection

angle of deviation = 2 angle angle of incidence

therefore

angle of incidence +angle of incidence+2angle of incidence= 180°

4 angle of incidence= 180°

Therefore angle of incidence= 45°

hope this helps

plz mark brainliest

Answer 2

HEY MATE!

HERE IS YOUR ANSWER

Since the angle of deviation, angle of incidence and the angle of reflection form 180° (angles on a straight line)

hence angle of incidence +angle of reflection+ angle of deviation=180°

angle of incidence = angle of reflection

angle of deviation = 2 angle angle of incidence

therefore

angle of incidence +angle of incidence+2angle of incidence= 180°

4 angle of incidence= 180°

Therefore angle of incidence= 45°

hope this helps

plz mark brainliest