The thermo emf E (in volts) of a certain thermocouple is found to vary wi
Channel: Doubtnut
Date: 24/05/2020

The thermo emf E (in volts) of a certain thermocouple is found to vary with Q  (in C) acoording to eqution `(E=20Q-Q^2/(20))`, where Q is tempereature of the hot function, the cold function being kept at `0^@C`. Then the neutral temperature of the thermocouple is