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CUET

Q13. If the 8th bright band of wavelength λ₁ coincides with 9th bright brand of wavelength 22 in a Young's double slits experiment, then the possible wavelength of two lights is: (a) λ₁ = 450 nm, λ₂ = 400 nm (b) λ₁ = 400 nm, λ₂ = 450 nm (c) λ₁ = 425 nm, λ₂ = 450 nm (d) λ₁ = 400 nm, λ₂ = 425 nm