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MHT CET 2024 (11 May, Shift 2) · Superposition, Coherence & Intensity

Superposition, Coherence & Intensity question from MHT CET 2024 (11 May, Shift 2)

Q47MHT CET 2024 · 11 MAY · SHIFT 2Medium

Superposition, Coherence & Intensity

Considering interference between two sources of intensities ' I ' and ' 4 I ', the intensity at a point where the phase difference is $\pi$ is $(\cos\pi = -1)$

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Answer: (a)

$I_R = I_1 + I_2 + 2\sqrt{I_1 I_2}\cos\phi$
$I_R = I + 4I + 2\sqrt{4I^2}(-1) = 5I - 4I = I$
So the answer is (a) $I$ .

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