Q. $e = \alpha\ t - \frac{1}{2}\beta\ t^{2},$ if temperature of cold junction is $0℃$ then temperature of inversion is (if $\alpha = 500.0\mu V/℃,\beta = 5.0\mu V/square℃$)

A) 100
B) 200
C) 300
D) 400
Explanation

(b) $t_{n} = \frac{\alpha}{\beta} = \left( \frac{500}{5} \right) = 100℃$
Also$\ t_{n} = \frac{t_{i} + t_{c}}{2} \Rightarrow 100 = \frac{t_{i} + 0}{2} \Rightarrow t_{i} = 200℃$

Dr. Abubacker
Reviewed by Dr. Abubacker

Physics Educator & NEET/JEE Specialist

Ph.D. in Physics with 19+ years of teaching experience.