MHT CET 2022 Physics question
A parallel beam of light of wavelength '' is incident normally on a narrow slit. A diffraction pattern is formed on a screen placed perpendicular to the direction of incident beam. At the second minimum of the diffraction pattern, the phase difference between the rays coming from the two edges of slit is
Answer: (B)
Solution
For single-slit diffraction, minima occur when the path difference between the rays from the two edges is . For the second minimum : path difference . Phase difference \dfrac{2π}{λ}$×\text{path
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