Question

A Ray of light makes an angle of 50° with the surface is one on the glass slab its angle of incident will be optional 50° option B 40 degree option C 140 degree option d 0 degree

Answer 1

Answer:

(B). The angle of incident will be 40°.

Explanation:

A Ray of light makes an angle of 50° with the surface is one on the glass slab.

Then the incidence angle will be 40°.

When the light ray strikes on the surface of the certain medium then the angle formed between incidence ray and the normal line is called incidence angle.

The incidence angle $i = 40^{\circ}$

Hence, The angle of incident will be 40°.

Answer 2

The angle of incidence <tex> I </tex> minus 90⁰

I=60⁰

and 90⁰

therefore 90 - 60=40⁰

option b

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