MHT CET 2022 Physics question
In a diffraction pattern, light of wavelength 580 nm is incident normally on a slit of width 'a'. The distance between slit and the screen is 2.5 m and the distance of the second order maximum from the center of the screen is 14.5 mm. The value of 'a' is
Answer: (A)
Solution
In single-slit diffraction the secondary maxima occur at . For small angles , so . For the second-order maximum , so . Hence \dfrac{5λ D}{2y_2}$ =
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