The resultant amplitude in interference with two coherent sources depends upon-

Options

A. only amplitude
B. only phase difference
C. on both the previous option
D. none of the above

Answer

C

Explanation

Resultant amplitude `A=sqrt(a_(1)^(2)+a_(2)^(2)+2a_(1)a_(2)cosphi)`
`phi-`Angle between two waves or phase difference. So A depends on both amplitude & phase difference.