Colours thin films are due to

Dark and colour patterns on thin soap films are due to-

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

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

In the formation of colours in thin films, the optical path difference between the interfering rays does not depend upon :

A very thin transparent film of soap solution (thickness to 0) is seen under reflection of white light. Then the colour of the film appear to be :

On a rainy day, small oily films on water show brilliant colours. This is due to ________.

Colours of thin soap bubbles are due to