Q. Light waves projected on oil surface show seven colurs due to:

A
Polarisation
B
Interference
C
Refraction
D
Diffraction
Solution:

Interference of Light Waves is defined as the modification in the distribution of light energy when two or more waves superimpose each other.

The principle of interference is responsible for the brilliant hues of certain butterflies and beetles, and is also seen in soap bubbles.

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