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A wave has velocity u In medium P and ve...

A wave has velocity `u` In medium P and velocity `2u` in medium Q. If the wave is refracted from medium P medium Q at an angle of incidence `30^@`, then the angle of refraction will be

A

`30^(@)`

B

`60^(@)`

C

`45^(@)`

D

`90^(@)`

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The correct Answer is:
A
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