Home
Class 12
PHYSICS
An oil film covers the surface of a smal...

An oil film covers the surface of a small pond. The refractive index of the oil is greater than that of water. At one point on the film, the film has the smallest non-zero thickness for which there will be destructive interference in the reflected light when infrared radiation with wavelength 800 nm is incident normal to the film. When this film is viewed at normal incidence at this same point, for what visible wavelengths, if any, will there be constructive interference? (Visible light has wavelengths between 400nm and 700 nm )

Text Solution

Verified by Experts

The correct Answer is:
`[5330Å]`
Promotional Banner

Similar Questions

Explore conceptually related problems

Refractive index of a thin soap film of a uniform thickness is 1.38. The smallest thickness of the film that gives an interference maxima in the reflected light when light of wavelength 5520 Å falls at normal incidence is

Refractive index of a thin soap film of a uniform thickness is 1.34. Find the smallest thickness of the film that gives in interference maximum in the reflected light when light of wavelength 5360 Å fall at normal incidence.

What is the minimum thickness of thin film required for constructive interference in the reflected light through it ? (Given, the refractive index of the film =1.5, wavelength of the lilght incident on the film =600 nm.

What is the minimum thickness of a soap bubble needed for constructive interference in reflected light if the light incident on the film has wavelengths 900 nm ? Assume the refractive index for the film is mu = 1.5

What is the minimum thickness of a thin film (mu=1.2) that results in constructive interference in the reflected light? If the film is illuminated with light whose wavelength in free space is lambda=500nm ?

What is the minimum thickness of a soap bubble needed for constructive interference in reflected light, if the light incident on the film is 750 nm? Assume that the refractive index for the film is n=1.33

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

Calculate the minimum thickness of a soap bubble film (mu=1.33) that results in constructive interference in the reflected light if the film is illuminated with light whose wavelength in free space is lambda=600nm .