Question

student incident light beam on one mirror at an angle of 40 degree as shown in the figure then what will be the angle of reflection at mirror 2.

please answer it fast

Answer 1

If the light beam is incident at an angle of 40° , so angle of reflection also=40°

And when light further falls on another mirror, a triangle is formed in which

70°+40°+angle of reflection=180°(Angle sum property)

angle of reflection=180°-110°=70°

ANSWER=70°

Answer 2

Answer:

Answer is 70 degree.

Explanation:

The light beam on one mirror = 70⁰

So,angle reflection will also = 40⁰

We know that angle sum property =180⁰

• 70⁰+40⁰+angle of reflection=180⁰
• angle of reflection +110⁰=180⁰
• angle of reflection =180⁰-110⁰
• angle of reflection =70⁰

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