Q. 64.8( 12 Votes )

If a ray of light is incident on a plane mirror such that it makes an angle of 30with the mirror, then will be the angle of reflection?

Answer :

Ray of light strikes the mirror at an angle of 300.

It will make an angle of 600 (900 – 300) with the normal. As shown in the figure below.



Angle of incidence = 600.


Now, By laws of reflection;


Angle of Incidence = Angle of reflection;


Angle of reflection = 60o.


Hence Angle of reflection is 60o.


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