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IrinaVladis [17]
2 years ago
8

Just a test for my internet :)

Physics
1 answer:
Talja [164]2 years ago
3 0

Answer:

Okay

Explanation:

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The angle between the incident ray and the surface of a plane mirror is 20'. What is the total angle rotated by the incident ray
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Angle made by the light ray with the surface of mirror is given as

\theta_i = 90 - 20 = 70degree

now as we know as per law of reflection that

angle of incidence = angle of reflection

So here we can say that

\theta_i = \theta_r

\theta_r = 70 degree

now the total angle that reflected ray will rotate with respect to incident ray is known as angle of deviation

\delta =180 - \theta_i - \theta_r

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HELP !!!!!!! I NEED A QUICK ANSWER IM CONFUSED !!!!
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