Solved: PHYSICS Question for NEET

NEET PHYSICSEasy

If the cold junction of a thermocouple is kept at $0^\circ\text{C}$ and the hot junction is kept at $T^\circ\text{C}$ , then the relation between neutral temperature ( $T_n$ ) and temperature of inversion ( $T_i$ ) is:

$T_n = \frac{T_i}{2}$

$T_n = 2T_i$

$T_n = T_i - T$

$T_n = T_i + T$

Step-by-Step Solution

For a given thermocouple, the temperature difference between the neutral temperature ( $T_n$ ) and the cold junction temperature ( $T_c$ ) is equal to the temperature difference between the inversion temperature ( $T_i$ ) and the neutral temperature ( $T_n$ ). This can be mathematically expressed as: $T_n - T_c = T_i - T_n$ $\implies 2T_n = T_i + T_c$ Given that the cold junction is kept at $0^\circ\text{C}$ ( $T_c = 0^\circ\text{C}$ ), $2T_n = T_i + 0$ $\implies T_n = \frac{T_i}{2}$

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