Light of wavelength 6000 o Ais incident normally on a slit of width `24 times 10^–5 `cm. Find out the angular position of second minimum from central maximum ?

Explanation

`a sintheta=2 lamda`
`given lamda=6 times10^-7 m, a=24 times 10^-5times10^-2m`
`sintheta=(2lamda)/a=(2times6times10^-7)/(24times10^-7)=1/2thereforetheta=30^@`