NEET Physics Interference MCQ Question
Which of the following statements about interference of light waves is correct?
Incoherent sources can produce interference patterns under certain conditions.
Destructive interference occurs when the phase difference is a multiple of 2π.
Constructive interference results in a bright fringe when the path difference is an integer multiple of the wavelength.
Only light from two identical sodium lamps can create coherent sources.
Correct Answer
Detailed Explanation
Constructive interference occurs when the path difference between light waves is an integer multiple of the wavelength, leading to a bright fringe, as stated in the NCERT context. Incoherent sources cannot produce interference patterns due to rapid phase changes.
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