NEET Physics Interference Assertion Reason Question
Assertion (A): Coherent light sources are necessary for observing stable interference patterns. | Reason (R): Coherent sources have a constant phase relationship over time.
Both A and R are true, and R is the correct explanation of A.
Both A and R are true, but R is not the correct explanation of A.
A is true, but R is false.
A is false.
Correct Answer
Detailed Explanation
Interference patterns require coherent sources which maintain a constant phase difference. The NCERT context states that incoherent sources like separate light sources do not produce interference patterns due to rapid phase changes.
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