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MHT CET Physics question

PhysicsThermal Properties of MatterMHT CET

At room temperature, the thermo e. m. f of copper-constantan is V/C. The smallest temperature difference that can be measured with single such thermocouple and a galvanometer of resistance capable of detecting currents as low as A is

Answer: (D)

Solution

The smallest detectable emf is V, so $Δ

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Question ID VK-045167