NEET Physics Interference MCQ Question
Which of the following statements about the interference of waves from two coherent sources is correct?
Constructive interference occurs when the path difference is an integer multiple of the wavelength.
Destructive interference results in maximum intensity at points where the path difference equals half a wavelength.
The resultant intensity of waves during constructive interference is always zero.
The phase difference of 180 degrees always leads to constructive interference.
Correct Answer
Detailed Explanation
According to the NCERT context, constructive interference occurs when the path difference is equal to nλ (where n is an integer), resulting in maximum intensity. Option B is partially correct but misstates the condition for maximum intensity. Options C and D are incorrect as they misrepresent the nature of interference.
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