In Young's double slit experiment with sodium vapour lamp of wavelength 589 nm and the slits `0.589` mm apart, the half angular width of the central maximum is

Options

A. `sin^(-1) 0.01`
B. `sin^(-1) 0.0001`
C. `sin^(-1) 0.001`
D. `sin^(-1) 0.1`

Answer

C

Explanation

`sin theta = (lambda)/(d)`
` = (589 xx 10^(-9))/(0.589 xx 10^(-3)) = 10^(-3) = (1)/(1000) = 0.0001`