Physics · 2011
NEET 2011 · Mains · Code B · Q96
A thermocouple of negligible resistance produces an e.m.f. of 40 μ V /^° C in the linear range of temperature. A galvanometer of resistance 10 ohm…
A thermocouple of negligible resistance produces an e.m.f. of $\displaystyle 40 \mu \mathrm{~V} /{ }^{\circ} \mathrm{C}$ in the linear range of temperature. A galvanometer of resistance $\displaystyle 10$ ohm whose sensitivity is $\displaystyle 1 \mu \mathrm{~A} / \mathrm{div}$, is employed with the thermocouple. The smallest value of temperature difference that can be detected by the system will be :
Official answer
(4)
0.$\displaystyle 25$°C
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NEET (UG) 2011 Physics question, with the answer from NTA’s final answer key. Where our answers come from.