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NEET 1991 (AIPMT) · Superposition, Coherence & Intensity

Superposition, Coherence & Intensity question from NEET 1991 (AIPMT)

Q102NEET 1991 · AIPMTEasy

Superposition, Coherence & Intensity

Ratio of intensities of two waves are given by 4: 1. Then ratio of the amplitudes of the two waves is

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Answer: (a)

Intensity $I \propto A^2$ , so $\dfrac{A_1}{A_2} = \sqrt{\dfrac{I_1}{I_2}}$ .
$\dfrac{A_1}{A_2} = \sqrt{4} = 2$
So the answer is (a) $2 : 1$ .

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