MHT CET 2024 Physics question
A single slit of width d is illuminated by violet light of wavelength 400 nm and the width of the diffraction pattern is measured as 'Y'. When half of the slit width is covered and illuminated by yellow light wavelength 600 nm, the width of the diffraction pattern is
Answer: (C)
Solution
The width of the central maximum in single-slit diffraction is , i.e. . Initially . When half the slit is covered the slit width becomes and the wavelength is
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