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A sound wave travels from air to water. ...

A sound wave travels from air to water. The angle of incidence is `alpha_(1)` and the angle of refraction is `alpha_(2)`. Assuming Snells law to be valid:

A

`alpha_(2) lt alpha_(1)`

B

`alpha_(2) gt alpha_(1)`

C

`alpha_(2) = alpha_(1)`

D

`alpha_(2) gt 90^(@)`

Text Solution

Verified by Experts

The correct Answer is:
B
`(sin alpha_(1))/(sin alpha_(2)) = (v_(a))/(v_(omega))`
`v_(a) lt v_(omega), alpha_(1) lt alpha_(2)`
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