Q.

In Young’s double–slit experiment, the central bright fringe can be identified

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a

As it has greater intensity than the other bright fringes

b

As it is wider than the other bright fringes

c

By using white light instead of monochromatic light

d

As it is narrower than the other bright fringes

answer is D.

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Detailed Solution

In Young. s double slit experiment, the central bright fringe can be identified by using whitelight instead of monochromatic light because if the slit is illuminated with white light, then a central white fringe is obtained surrounded with a few coloured fringes.

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