1
AIPMT 2011 Mains
MCQ (Single Correct Answer)
+4
-1
A thermocouple of negligible resistance produces an e.m.f. of 40 µV/ºC in the linear range of temperature. A galvanometer of resistance 10 ohm whose sensitivity is 1 µA/division, is employed with the thermocouple. The smallest value of temperature difference that can be detected by the system will be
A
1ºC
B
0.5 ºC
C
0.1ºC
D
0.25ºC
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