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NEET UG PHYSICS MCQ: THERMAL PROPERTIES OF MATTER

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Three metal rods of same lengths, and some area of cross section having conductivities 1,2,3 units are connected in series, then their effective conductivity will be

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Correct option: B

1.6 units

Option B (1.6 units) is correct because the effective conductivity of rods in series is calculated using the formula 1/K_eff = (1/K1 + 1/K2 + 1/K3)/3, which simplifies to K_eff = 3 / (1/1 + 1/2 + 1/3) = 1.6.

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