Question

why are multiple colour observed over a thin frame of oil floating on water explain with the help of diagram​

Answer 1

Multiple colours are observed on the oil floating on water due to the phenomenon of interference. The light falling on the different surfaces of the film gets reflected and undergoes constructive interference producing multiple colours.

Answer 2

Answer:

The brilliant colours of soap bubbles and thin films on the surface of water are due to the interference of light waves reflected from the upper and lower surfaces of the film. The incident wave gets partially reflected from upper surface

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