Three waves due to three coherent sources meet at one point. Their amplitudes are `sqrt2A_0 , 3A_0` and `sqrt2A_0` . Intensity corresponding to `A_0` is `l_0`. Phasse difference between first and second is `45^@`. Path difference between first and third is `lambda/4`. In phase angle, first wave lags behind from the other two waves. Find resultant intensity at this point.

Explanation

`lambda/4` path difference is equivalent to `90^@`phase
difference
`A_"net" =5A_0`
`rArr I_(max) = 25 I_0 `
.