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JEE PHYSICS MCQ: WAVE OPTICS

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The Fraunhofer 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

View answer and explanation

Correct option: A

5000\mathop \mathrm{A}\limits^ \circ

Option A (

5000\mathop \mathrm{A}\limits^ \circ

) is correct because it is calculated using the formula for the position of minima in Fraunhofer diffraction.

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