Two identical coherent sources of wavelength `lambda` are placed at `(100 lambda, 0)` and `(-50 lambda, 0)` along x-axis. The number of maxima and minima detected are ,respectively [include origin and `(5 lambda, 0)]`

Options

A. 51 and 50
B. 101 and 100
C. 49 and 50
D. 50 and 49

Answer

b

Explanation

If the detector move by `0.5 lambda` from origin, it observers 2nd maxima. So, after every `0.5 lambda`, one maxima will be observed.