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The phase difference between two points ...

The phase difference between two points separated by 1m in a wave of frequency 120 Hz is `90^(@)` . The wave velocity is

A

180m/s

B

240m/s

C

480m/s

D

720m/s

Text Solution

Verified by Experts

The correct Answer is:
C
Path differnce `DeltaH=(lamda)/(2pi)xxphi`
`1=(lamda)/(2pi)xx(pi)/(2)`
`lamda=4m`
`V=nlamda=120xx4=480m//s`.
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