MHT CET 2025 Physics question
In Young's double slit experiment with monochromatic light of wavelength 600 nm, the distance between the slits is m. For changing the fringe width by m a) the screen is moved away from the slit by 5 cm. b) the screen is moved 5 cm towards the slits. c) the screen is moved 3 cm towards the slits. d) the screen is moved away from the slits by 3 cm.
Answer: (B)
Solution
Fringe width , so a shift of the screen by changes it by . Hence m cm. A change of
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