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Near room temperature , the thermo emf o...

Near room temperature , the thermo emf of a thermo couple is `40 muV` per degree. A galvanometer of `25 Omega` and capable of detecting current of the order of `4 mu` A is used. Calcualate the smallest temperature difference that can be detected with this galvanometer.

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The correct Answer is:
Use the relation , `varepsilon=alphatheta+(1)/(2)betatheta^(@)`
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