If intensity of each wave in the observed interference pattern in Young’s double slit experiment is `I_0`. Then for some point P where the phase difference is phi, intensity I will be :

Options

A. `I=I_0 cos phi`
B. `I=I_0 cos^2 phi`
C. `I= I_0 (1+ cos phi)`
D. `I=2I_0(I + cos phi)`

Answer

D