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The width of central fringe of a diffrac...

The width of central fringe of a diffraction pattern is 5.8 mm on a screen at a distance 2m. If light source has wavelength 5800 Å then the slit width

A

0.2mm

B

0.4mm

C

0.8mm

D

0.1mm

Text Solution

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The correct Answer is:
B
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