Physics, asked by imsadlyverydumb, 3 months ago

Can somebody please please answer to this? it would help a lot! ​

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Answered by hariniaedulla
1

Answer:

i) 90

II) 50

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Answered by Sayantana
2

Answer:

firstly remember one thing that angle of incidence is always measured from normal.

now lets solve,

Explanation:

hope it helps....

Good luck

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