Question

A ray of light is incident on a plane mirror making an angle of 20 degree with the normal. The mirror is now rotated by 10 degree such that the normal at the point of incidence moves away from the incident ray. The new angle of reflection is _______.​

Answer 1

Answer:

If the mirror is rotated through an angle the normal is rotated by an angle and thus the angle of incidence increases to +. Therefore, the angle of reflection must also increase by tow The difference between the final angle of reflection and the initial angle of reflection and is 2θ. Was this answer helpful?

Answer 2

${\huge{\boxed{\mathcal{\pink{answer}}}}}</p><p></p><p>$

If the mirror is rotated through an angle the normal is rotated by an angle and thus the angle of incidence increases to +. Therefore, the angle of reflection must also increase by tow The difference between the final angle of reflection and the initial angle of reflection and is 2θ. Was this answer helpful