A parallel beam of monochromatic light of wavelength 5000 
is incident normally on a single narrow slit of width 0.001 mm. The light is focussed by a convex lens on a screen placed in focal plane. The first minimum will be formed for the angle of diffraction equal to
A
B
C
D
Text Solution
Verified by ExpertsThe correct answer is:
C
: For first minimum, 
or 
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