Yong's double-slit experiment is carried out by using green, red and blue light, one color at a time. The fringe widths recorded are `beta_(G),beta_(R)` and `beta_(B)`, respectively. Then

Options

A. `beta_(G) gt beta_(B) gt beta_(R)`
B. `beta_(B) gt beta_(G) gt B_(R)`
C. `beta_(R) gt beta_(B) gt beta_(G)`
D. `beta_(R) gt beta_(G) gt beta_(B)`

Answer

D

Explanation

The fringe width `beta=(lamdaD)?(d)" "therefore betaproplamda`
From the visible spectrum VIBGYOR, we find that
`lamda_(R) gt lamda_(G) gt lamda_(B)" "therefore beta_(R) gt beta_(G) gt beta_(B)`