Q93 / 180 · AIIMS 2004 · Physics

When a compact disc is illuminated by a source of white light, coloured lines are observed. This is due to

A
dispersion
Correct answer
B
diffraction
C
interference
D
refraction.

Solution

In compact disc colour results due to phenomenon of diffraction, in which small ripples on the surface of it break up white light into the colour of rainbow.

Hence, the correct answer is option: 'B'.

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