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Question : 27
Total: 37
In a single slit diffraction experiment, width of the slit is increased. How will the (a) size and (b) intensity of central bright band be affected? Justify your answer.
Solution:
The width of the central bright band
where
(i) As the width of the slit is doubled, the size of the central diffraction band will be half.
(ii) Intensity of central bright band is proportional to
So, the intensity will get quadrupled.
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