In YDSE, the slits separation is `0.6mm` and the separation between slit and screen is `1.2m`. The wavelength of light used is `4800 overset(@)AA` . The angular fringe width is `Pxx10^(-4)` radian. Find the value of P ?

Answer

8

Explanation

Angular fringe width is
`theta = (beta)/(D) = (lambda)/(d)`
`theta = (4800xx10^(-10))/(0.6xx10^(-3)) = (48xx10^(-8))/(6xx10^(-4))`
`theta = 8xx10^(-4) = Pxx10^(-4) implies P = 8`