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Questions  >>  CBSE XII  >>  Physics  >>  Wave optics
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A parallel beam of light of wave length 500 nm falls on a narrow slit and the resulting diffraction pattern is observed on a screen i m away . It is observed that the first minimum is at a distance of 2,5 nm from the center of the screen . Find the width of the slit .

0.2mm0.2cm2mm2cm

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