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Light of wavelength  6000 A0 is incident on a single slit. The first minimum of the diffraction pattern is obtained at 4 mm from the centre. The screen is at a distance of 2 m from the slit. The slit width will be

a
0.3 mm
b
0.2 mm
c
0.15 mm
d
0.1 mm

detailed solution

Correct option is A

Minimum condition for diffraction is

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