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Two identical rectangular slits apart are illuminated with a monochromatic light of wavelength …
Two identical rectangular slits $5\text{ mm}$ apart are illuminated with a monochromatic light of wavelength $600\text{ nm}$. The screen is kept $1.2\text{ m}$ away from the slits.
(i)
Calculate the distance between the $5^{\text{th}}$ bright fringe (band) on one side and the $3^{\text{rd}}$ bright fringe on the other side of the central bright band.
(ii)
What will be the change in the interference pattern if the given light is replaced with monochromatic light of wavelength $500\text{ nm}$?
Answer
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From ISC 2025 Physics Paper 1, question 16.