A linear aperture whose width is 0.02 cm is placed immediately in front of a lens of focal length 60 cm. The aperture is illuminated normally by a parallel beam of wavelength 
cm. The distance of the first dark band of the diffraction pattern from the centre of the screen is
Text Solution
Verified by ExpertsThe correct answer is:
D
: Here, 
Position of first minima on the diffraction pattern,
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