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Two waves having equation x1= a sin (...

Two waves having equation
`x_1= a sin (omegat+phi_1)`
`x_2=a sin (omegat+phi_2)`
If in the resultant wave the frequency and amplitude remains equals to amplitude of superimposing waves. Then phase diff. between them : -

A

`(pi)/6`

B

`(2pi)/(3) `

C

`(pi)/4`

D

`(pi)/3`

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The correct Answer is:
B
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