MHT CET 2024 Physics question
In Fraunhofer diffraction pattern, slitwidth is 0.5 mm and screen is at 2 m away from the lens. If wavelength of light used is , then the distance between the first minima on either side of the central maximum is ( is small and measured in radian)
Answer: (C)
Solution
For single-slit diffraction the first minimum occurs at , so for small , . Its distance from the centre of the screen is . With m, m and m: $y =
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