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MHT CET 2024 (2 May, Shift 1) · Superposition, Coherence & Intensity

Superposition, Coherence & Intensity question from MHT CET 2024 (2 May, Shift 1)

Q44MHT CET 2024 · 2 MAY · SHIFT 1Medium

Superposition, Coherence & Intensity

The intensity of light coming from one of the slits in Young's double slit experiment is double the intensity from the other slit. The ratio of the maximum intensity to the minimum intensity in the interference fringe pattern observed is

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Answer: (b)

Intensities $2I$ and $I$ , so amplitudes $\sqrt{2} : 1$ .
$\frac{I_{max}}{I_{min}} = \left(\frac{\sqrt{2}+1}{\sqrt{2}-1}\right)^2 = (\sqrt{2}+1)^4 = 17 + 12\sqrt{2} \approx 34$
So the answer is (b) $34 : 1$ .

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