Physics-Interference
NEET Physics Interference MCQ Question
Type: MCQ-fact-Hard-Class 12
What is the condition for destructive interference at a point P due to two coherent sources S1 and S2?
A
S1P - S2P = (n + 1/2)λ, where n = 0, 1, 2, 3...
B
S1P - S2P = nλ, where n = 0, 1, 2, 3...
C
S1P + S2P = nλ, where n = 0, 1, 2, 3...
D
S1P + S2P = (n + 1/2)λ, where n = 0, 1, 2, 3...
Correct Answer
Option A
Detailed Explanation
Destructive interference occurs when the path difference between two coherent waves is equal to (n + 1/2)λ, leading to cancellation of the waves and zero intensity at that point.
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