The two coherent sources produce interference with intensity ratio ' b '. In the interference pattern, the ratio Imax + IminImax - Imin maxmaxminmin will be (a) (1+b)/(√(b)) (b) (1+b)/(2√(b)) (c) (2√(b))/(1+b) (d) (2√(b))/((1+b)²)

Answer: (b). Imax + Imin = 2(I₁ + I₂), Imax - Imin = 4√(I₁ I₂) Ratio = (I₁ + I₂)/(2√(I₁ I₂)); with (I₁)/(I₂) = b this is (1+b)/(2√(b)) So the answer is (b) (1+b)/(2√(b)).

The two coherent sources produce interference with intensity ratio '… | MHT CET 2025 (21 Apr, Shift 2)

Q25MHT CET 2025 · 21 APR · SHIFT 2Medium

Superposition, Coherence & Intensity

The two coherent sources produce interference with intensity ratio ' $b$ '. In the interference pattern, the ratio $\frac{I_{max} + I_{min}}{I_{max} - I_{min}}$ maxmaxminmin will be

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Answer: (b)

$I_{max} + I_{min} = 2(I_1 + I_2)$ , $I_{max} - I_{min} = 4\sqrt{I_1 I_2}$
Ratio $= \frac{I_1 + I_2}{2\sqrt{I_1 I_2}}$ ; with $\frac{I_1}{I_2} = b$ this is $\frac{1+b}{2\sqrt{b}}$
So the answer is (b) $\frac{1+b}{2\sqrt{b}}$ .

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