Light of wavelength `500 nm` is incident on two slits separated by `1 mm` in YDSE. What is the width of each dark band if the screen is `1 metre` away from the slits ?
Text Solution
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Here, `lambda = 500 nm = 500 xx 10^(-9)m , d = 1 mm = 10^(-3)m , beta = ? D = 1m` `beta = (lambda D)/(d) = (500 xx 10^(-9) xx 1)/(10^(-3)) = 5 xx 10^(-4)m = 0.5 mm`
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