NEET Physics Interference Assertion Reason Question
Assertion (A): In Young's double-slit experiment, no interference fringes are observed when two independent light sources are used. | Reason (R): Two independent light sources are incoherent and have no fixed phase relationship.
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 but R is true.
Correct Answer
Detailed Explanation
Both statements are true and coherent sources are necessary for observing interference fringes. Incoherent sources, having no fixed phase relationship, result in no interference pattern.
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