Find the angular separation between the consecutive bright fringes in a Young's double slit experiment with blue-green light of wavelength 500 nm. The separation between the slits is `2.0 x 10^ -3` m.

Answer

A, D

Explanation

Given that `lamda=500nm`
`500xx10^-9m and d=2xx10^-3 m`
Angular separation
`(thetabeta)/d=(lamdaD)/(dD)=lamda/d`
`so, theta=beta/D=lamda/d=(500xx10^-9)/(2x10^-3)`
`=250xx10^-6
`=25xx10^-5` radians
`=0.014degree