Question

The Fraunhoffer ‘diffraction’ pattern of a single slit is formed in the focal plane of a lens of focal length 1 m. The width of slit is 0.3 mm. If third minimum is formed at a distance of 5 mm from central maximum, then wavelength of light will be(a) 5000 Å(b) 2500 Å(c) 7500 Å(d) 8500 Å

Answer 1

HERE IS YOUR ANSWER :-

Option No. A

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