MHT CET 2025 Physics question
In Fraunhofer diffraction pattern, slit width is 0.3 mm and screen is at 1.5 m away from the lens. If wavelength of light used is 4500 Å, then the distance between the first minimum on either side of the central maximum is [ is small and measured in radian.]
Answer: (D)
Solution
For a single slit, the first minimum is at , so for small : . Its distance from the centre of the screen is m
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