If a light ray incident on a plane mirro...

If a light ray incident on a plane mirror makes an angle `30^(@)` with it, find the angle of incidence and angle of reflection.

Text Solution

Verified by Experts

It is given that the incident ray makes an angle `30^@` with the mirror. But the angle of incidence is the angle between the incident ray and the normal. Then, `angle i = 90^@ - 30^@ = 60^@` on applying laws of reflection,
`angle i = angle r = 60^@`

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

`30^@`

`45^@`

`55^@`

`60^@`

If a ray of light incident on a plane mirror is such that it makes an angle of 30^(@) with the mirror, then the angel of reflection is

`30^(@)`

`45^(@)`

`55^(@)`

`60^(@)`

A ray of light is incident on a plane mirror at an angle of 20^(@) with the normal, at the point of incidence, Through what angle, the ray of light will be deviated from its direction of incidence ?

`20^(@)`

`40^(@)`

`90^(@)`

`140^(@)`