Question
Assertion : In Young’s experiment, the fringe width for dark fringes is different from that for  white fringes.

Reason : In Young’s double slit experiment the fringes are performed with a source of white light, then only black and bright fringes are observed.

Answer

In Young’s experiments, fringe width of dark and white fringes are equal. If white light is used as source, coloured fringes are observed representing bright band of different colours.

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