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In the experiment of diffraction at a si...

In the experiment of diffraction at a single slit, if the slit width is decreased, the wdith of the central maximum

A

Increase

B

Decrease

C

Not change

D

Change depending upon the wave length of light used

Text Solution

Verified by Experts

The correct Answer is:
B
Fringe width `W = (2 f lambda)/(a)`
`W prop (1)/(a)`
it means a increase and W decrease.
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