A beam of light of wavelength 600 nm from a distant source falls on a single slit 1.00 mm wide and the resulting diffraction pattern is observed on a scfeen 2 m away.The distance between the first dark fringes on either side of the central bright fringe is :

A beam of light of wavelength 600 nm from a distant source falls on a

1.	A beam of light of wavelength 600 nm from a distant source falls on a single slit 1.00 mm wide and the resulting diffraction pattern is observed on a scfeen 2 m away.The distance between the first dark fringes on either side of the central bright fringe is :
Answer» `1.2 CM` `1.2 mm` `2.4 cm` `2.4 mm` Solution :`d SIN THETA = n LAMBDA` `sin theta approx thetaapprox (y)/(D)` So position of first MINIMA is `d.(y)/(D) = lambda` `y = (D)/(d) lambda = 1.2` mm

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A beam of light of wavelength 600 nm from a distant source falls on a single slit 1.00 mm wide and the resulting diffraction pattern is observed on a scfeen 2 m away.The distance between the first dark fringes on either side of the central bright fringe is :

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