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 ?
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Width of central maximum is `2x = (2 D lambda)/(a)`, when width of slit (a) is doubled, central max. width is halved. Its area becomes `1//4th`. Hence intensity of central diffraction beam becomes `4 times`.
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