Question

Identify the angles of incidence, angles of refraction normal present in the following figure

Answer 1

Answer:

Answer

Correct option is

C

(a)60

∘

,(b)120

∘

We know that angle of incidence and angle of reflection both are measured from normal which is perpendicular to the plane.

Let,

Angle of incidence =i

Angle of reflection =r

Normal ON is perpendicular to plane.

So, angle of incidence, i=90

0

−30

0

=60

0

We know that angle of incidence=angle of reflection

So, angle of incidence=angle of reflection =60

0

Hence, angle between incident ray(AO) and reflected ray(OB) is =i+r=60

0

+60

0

=120

0

solution

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