A parallel beam of white of white light falls on a thin film whose refractive index is 1.33. If angle of incidence is `52^(@)` then thickness of the film for the reflected light to be coloured yellow `(lambda=6000Å)` most intensively must be :

A parallel beam of white light falls on a thin film whose refractive index is equal to 4//3 . The angle of incidence i=53^(@) What must be the minimum film thickness, if the reflected light is to be coloured yellow (lambda "of yellow" =0.6mum) most intensity ? (tan 53^(@)=4//3)

A parallel beam of light of wavelength 560 nm falls on a thin film of oil (refractive index = 1.4). What should be the minimum thickness of the film so that it strongly S4 T z reflects the light ?

A parallel beam of light of wavelenght 560 nm falls on a film of oil (refractive index =1.4 ). What should be the minimum thickness of the film so that it weakly transmits the light ?

A parallel beam of white light falls from air on a thin film whose refractive index is sqrt ( 3) . The medium on both sides of the film is air. The angle of incdidence is 60^(@) . Find the minimum film thickness if reflected light is most intense for lambda" = 600 nm" .

White light is incident normally on a thin glass plate of refractive index 1.5. Calculate the minimum thickness of the film for which the wavelength 4200 Å is absent for the reflected light.

The colours seen in the reflected white light from a thin oil film are due to

A light of wavelength 5890Å falls normally on a thin air film. The minimum thickness of the film such that the film appears dark in reflected light is