Question

a thin layer of oil on water surface shows beautiful colours . Explain .​

Answer 1

Answer:

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★ Thin films such a soap bubble or a thin layer of oil on water show beautiful colours when illuminated by white light. Reason: It happens due to the interference of light reflected from the upper surface of the thin film.

Answer 2

These colours are due to the interference between light waves reflected from the top and bottom surfaces of thin films. The colour depends on the thickness of the film and also the angle of incidence of the light.