Question

.In Young’s double-slit experiment the distance between the two slits is 0.8mm and the distance of the screen from the slits is 1.5m. Calculate the width of the bright band when the slits are illuminated by a monochromatic light of wavelength of 5560×10-10m.

Answer 1

The width of the bright band

x ̅=λD/d

=(5560×〖10〗^(-10)×1.5)/(0.8×〖10〗^(-3) )=1.0×〖10〗^(-3) m=1.0 mm