In Young’s Double Slit Experiment, the separation of the slits is 1.9mm & the fringe spacing is 0.31mm at a distance of 1m from the slit. Calculate the wavelength of light.
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Explanation:
Since in YDSE, angular width is given by
Angular Width A.W.=Dβ=dλ
For a given wavelength,
A.W.1d1=A.W.2d2
0.20×2=0.21×d2
d2=1.9mm
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