MHT CET 2025 Physics question
In a Fraunhoffer diffraction, light of wavelength '' is incident on slit of width 'd'. The diffraction pattern is observed on a screen placed at a distance 'D'. The linear width of cenral maximum is equal to two times the width of the slit, then 'D' has value
Answer: (A)
Solution
The angular half-width of the central maximum is given by , i.e. . The linear width of the central maximum on a screen at distance is . Given that this
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