Question

in young double slit screen experimental fringes of certain distance from the slits when the screen is away from the slits by 0.1m fring width increase by 6*10 the power-5m the separation between the slits is 1mm calculate the wave length of the light used​
plz ans this ques

Answer 1

Given:

D = 1mm

d = 0.1m = 100mm

β = 6 ×  10⁻⁵m

To find:

the wave length of the light used(λ)

Solution:

β = λ × $\frac{D}{d}$

λ = β × $\frac{d}{D}$

λ = 6 × 10⁻⁵ × 100

λ = 600 × 10⁻⁵