Monochromatic green light of wavelength `5 xx 10^(-7) m` illuminates a pair of slits 1 mm apart. The separation of bright lines on the interference pattern formed on a screen 2 m away is

Options

A. 0.25 mm
B. 0.1 mm
C. 1.0 mm
D. 0.01 mm

Answer

C

Explanation

Fringe width,
`beta= (lambdaD)/(d)= ( 5 xx 10^(-7) xx 2)/(1 xx 10^(-3)) = 10^(-3) = 1mm`