MCQ
The smallest temperature difference that can be measured with a combination of a thermocouple of thermo $\text{e.m.f.} \ 30mV$ per degree and a galvanometer of $50 \ \mathrm{ohm}$ resistance, capable of measuring a minimum current of $3 \times 10^{-7}$ amp is
- ✓$0.5$ degree
- B$1.0$ degree
- C$1.5$ degree
- D$2.0$ degree