NEET Physics Interference MCQ Question
Which of the following statements about interference of waves is correct?
Constructive interference occurs when the waves are in phase, resulting in maximum amplitude.
Incoherent sources produce a constant phase relationship leading to an interference pattern.
Interference fringes can be observed with two independent sodium lamps due to their coherence.
The intensity of the resultant wave is directly proportional to the square of the sum of individual amplitudes.
Correct Answer
Detailed Explanation
Constructive interference occurs when the waves from two coherent sources are in phase, leading to a resultant wave with maximum amplitude, as indicated in the context. Incoherent sources do not maintain a fixed phase relationship, which is why they do not produce interference patterns.
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