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Which two of the following waves are in ...

Which two of the following waves are in the same phase?
`y= A sin (kx -omega t ) `
` y=A sin (kx -omega t+pi ) `
` y= A sin (kx -omegat+ pi //2) `
` y=A sin (kx -omega t +2pi ) `

A

I and II

B

II and III

C

II and IV

D

I and IV

Text Solution

Verified by Experts

The correct Answer is:
D
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