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CBSE Class 12-science Answered

In the diffraction at a single-slit experiment ,how would the intensity of central maxima change if (a)-slit width is halved and (b)-visible light of longer wavelengths is used?
Asked by vaibhav gupta | 16 Dec, 2013, 03:32: PM
answered-by-expert Expert Answer
(a) When the slit-width is halved, the size of central maxima gets doubled. Its area becomes four times and hence its intensity would become one-fourth.
(b) On using visible light of longer wavelength, size of central maxima increases. Its area increases and hence its intensity would decrease.
Answered by | 18 Dec, 2013, 12:04: AM
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