JEE Main 2019 Physics question
In a double-slit experiment, green light (5303 Å) falls on a double slit having a separation of 19.44 μm and a width of 4.05 μm. The number of bright fringes between the first and the second diffraction minima is:
Answer: (B)
Solution
The diffraction minima lie at interference orders d/a = 4.8 and 9.6, so the bright fringes of orders 5, 6,
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