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Q10.17 (a) Answer the following questions:
In a single slit diffraction experiment, the width of the slit is made double the original width. How does this affect the size and intensity of the central diffraction band?
Answers (1)
As we know,
width of the central diffraction band is given by
where d is the width of the slit.
So when we double the width of the slit, the size of the central diffraction band reduces to half of its value. But, the light amplitude becomes double, which increase the intensity 4 times.
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