Question

Q8. IF THE ANGLE BETWEEN
INCIDENT RAY AND PLANE MIRROR
IS 20 DEGREES WHAT IS THE ANGLE
OF REFLECTION?​

Answer 1

Answer:

Angle between incidence ray and mirror is 20

0

So angle of incidence =90

0

−20

0

=70

0

And angle of reflection= Angle of incidencce =70

Explanation:

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Answer 2

Answer:

140° is the answer

Explanation:

Angle between incident ray and normal = 90-20 = 70°

So, angle between reflected ray and normal = 70° as well

Angle of reflection = Angle between incident ray and reflected ray = 70 + 70 = 140°