The difference in the number of waves when yellow light propagates through air and vacuum columns of the same thickness is one. The thickness of the air column is _____ mm . [Refractive index of air =

Question

The difference in the number of waves when yellow light propagates through air and vacuum columns of the same thickness is one. The thickness of the air column is _____ mm . [Refractive index of air = 1 . 0003 , the wavelength of yellow light in vacuum = 6000 A ∘ ]

TestHub · Accepted Answer

Thickness t = n λ So, n λ vac = ( n + 1 ) λ air n λ = ( n + 1 ) λ μ air n = 1 μ air - 1 = 10 4 3 t = n λ = 10 4 3 × 6000 A 0 = 2 mm

Physics - Wave Optics Question with Solution | TestHub

Doubts & Discussion