In Young’s double slit experiment the wavelength of light used is 500 nm. If the path difference between waves reaching a point P on the screen is 1.5 microns, then at that point P
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answer is 3.
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Detailed Solution
If path difference, x = nλ, then bright band will formand If x = 2n−1λ2 then n th dark band will form1.5×10-6 =n 500×10-9 n=3i.e. 3 rd bright band