Question

Ryan,while verifying the laws of reflection of sound measured the angle between the incident sound wave and reflected sound wave to be 130 degree.what would be the angle of incidence?

Answer 1

$\bold{\red{HeyaMate}}$

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Since the normal makes an angle of 90 with the plain.

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Therefore,

Let angle between incident ray and plain be X.

=> angle of incidence=(90-X)

=> angle of refraction=(90-X)

According to question:

90-x+ 90-x=130

=>180-2x=130

=>2x=50

=x=25.

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