Answer:
Explanation:
a ) Slit separation d = .1 x 10⁻³ m
Screen distance D = 4 m
wave length of light λ = 650 x 10⁻⁹ m
Width of central fringe = λ D / d
= [tex]\frac{650\times10^{-9}\times4}{.1\times10^{-3}}[/tex]
= 26 mm
b ) Distance between 1 st and 2 nd bright fringe will be equal to width of dark fringe which will also be equal to 26 mm
c ) Angular separation between the central maximum and 1 st order maximum will be equal to angular width of fringe which is equal to
λ / d
= [tex]\frac{650\times10^{-9}}{.1\times10^{-3}}[/tex]
= 6.5 x 10⁻³ radian.
