JEE Main 2024 Physics question
Two wavelengths λ and λ are used in Young's double slit experiment λ = 450 nm and λ = 650 nm. The minimum order of fringe produced by λ which overlaps with the fringe produced by λ is n. The value of n is .
Answer: 9
Solution
⇒ 9n₁ = 13n₂; the smallest integer solution has n₂ = 9.