Physics, asked by schrtdas, 3 months ago

calculate all the following..

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Answers

Answered by ikay4

1

Answer:

The first x is 70°.

the second x is 30°.

the last x is 10°

Explanation:

from the law of reflection,

the angle of reflection is equal to the angle of incidence, thus x+r =90 , but r=20 ∴ x=90-20 ⇒x=70

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