If a film having suitable thickness d with a refractive

Last updated: 6/12/2023

If a film having suitable thickness d with a refractive index less than that of glass is coated on the glass then waves reflected from the upper surface of the film interferes destructively with the waves reflected from the lower surface of the film Such a film is called non reflecting film Let na nf and ng be the refractive index of air reflecting film and glass respectively Select the correct alternative A is the wavelength of light in air 1 2 3 Question Type Multiple Correct Type d d X 4nf 3 4 X 2 2n 1 Air n 1 Nonreflecting film n n Glass n x 0 n x d For complete destructive interference nang when n nf na nf