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JEE Main Physics question

PhysicsUnits and MeasurementJEE Main

The e.m.f. of a certain thermocouple depends on the temperature difference between its two junctions in accordance with the relation , where is in microvolt and is in degree Celsius, and one junction is at zero degree Celsius. If takes a value of , the possible error (in ) when measuring a temperature of is . Find the value of .

Answer: 3

Solution

. At ,

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Question ID VK-157542