For light of wavelength λ=6 0×10⁻⁷m, it is found that in a thin film of air, 9 fringes occur between - Physics - Wave Optics

Question

For light of wavelength λ=6 0×10⁻⁷m, it is
found that in a thin film of air, 9 fringes occur between two
points Find the difference of the film thickness between these
points [Ans: 2 7microns]

Deepak Kumar · Accepted Answer

For light of wavelength λ=6.0×10⁻⁷m, it is found that in a thin film of air, 9 fringes occur between two points. Find the difference of the film thickness between these points. [Ans: 2.7microns]