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JEE Main 2024 Physics question

PhysicsWavesJEE Main 2024

Two waves of intensity ratio 1 : 9 cross each other at a point. The resultant intensities at that point, when (a) Waves are incoherent is I₁ (b) Waves are coherent is I₂ and differ in phase by 60°. If I₁/I₂ = 10/x then x = .

Answer: 13

Solution

Take the intensities as C and 9C. Incoherent: I₁ = C + 9C = 10C. Coherent:

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Question ID VK-017403