Assertion: Thin film such as 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 upper and lower face of the thin film.

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A is false and R is also false

Both A and R are true and R is the correct explanation of A

A is true but R is false

Both A and R are true and R is NOT the correct explanation of A

answer is A.

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Detailed Solution

Thin films show colors when illuminated by white light because the reflected rays from the upper and the lower surface of the film interfere constructively to give domination of some color for a particular value of thickness at a point.

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