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JEE Main 2012 Physics question

PhysicsWavesJEE Main 2012

Following are expressions for four plane simple harmonic waves (i) (ii) (iii) (iv) The pairs of waves which will produce destructive interference and stationary waves respectively in a medium, are

Answer: (4)

Solution

(i) and (ii) have the same frequency and direction and differ in phase (intended π), so they interfere destructively.

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Question ID VK-103369