Question

if angle of incidence is 30 then what will be the angle of reflection sound for maximum intensity and what will be (i-r)
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Answer 1

Explanation:

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Answer 2

Answer:

According to first law of reflection incident and reflected angles are equal. So, reflected angle will be 30 degrees. Reflected angle and angle B together make up the angle between normal and the surface that is 90 degrees. So, Angle b = (90 - reflected angle), which is (90-30) = 60 degree.