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If thetai, is the inversion temperature,...

If `theta_i`, is the inversion temperature, `theta_n` is the neutral temperature, `theta_c` is the temperature of the cold junction, then

A

`theta_(i)+theta_(c)=theta_(n)`

B

`theta_(i)-theta_(c)=2 theta_(n)`

C

`(theta_(1)+theta_(2))/2 =theta_(n)`

D

`theta_(c)-theta_(1)=2 theta_(n)`

Text Solution

Verified by Experts

The correct Answer is:
C
In Seeback (thermoelectric) effect, the temperature of hot junction at which the thermo emf is maximum is called the neutral temperature `(theta_(n))`, and the temperature at which thermo emf changes its sign is called inversion temperature `(theta_(i))`. if `theta_(c)` is the temperature of cold junction then these three are related by the expression.
`theta_(n)-theta_(c)=theta_(i)-theta_(n)`
`:, theta_(n)=(theta_(i)+theta_(c))/2`
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