In an interference arrangement similar to young's double slit experiment the slits `S_(1)` and `S_(2)` are illuminated with coherent microwave sources each of frequency `10^(6)Hz` the sources are synchronized to have zero phase difference. the slits are separated by a distance d=150.0m. The intensity `I(theta)` is measured as a funtion of `theta`, where `theta` is defined as shown. if `I_(0)` is the maximum intensity then `I(theta)` for `0lethetale90^(@)` is given by:

Options

A. `l(theta) = l_(0) /2` for `theta = 30^(0)`
B. `l(theta) = l_(0) /4` for `theta = 30^(0)`
C. `l(theta) = l_(0)` for `theta = 90^(0)`
D. `l(theta)` is constant for ali values of `theta`.

Answer

A, C, D