NEET Physics Interference MCQ Question
Which of the following statements about interference in wave optics is correct?
Constructive interference occurs when the path difference is an integer multiple of the wavelength.
Destructive interference occurs when the path difference is equal to half an odd multiple of the wavelength.
Incoherent sources produce a stable interference pattern due to fixed phase relationships.
The resulting intensity at a point of constructive interference is half of the intensity from individual sources.
Correct Answer
Detailed Explanation
Constructive interference occurs when the path difference is an integer multiple of the wavelength, leading to bright fringes, as stated in the NCERT context. Destructive interference occurs under different conditions, and incoherent sources do not maintain a fixed phase relationship.
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