JEE MAIN - Physics (2023 - 6th April Morning Shift - No. 16)
The resistivity $$(\rho)$$ of semiconductor varies with temperature. Which of the following curve represents the correct behaviour :
_6th_April_Morning_Shift_en_16_1.png)
_6th_April_Morning_Shift_en_16_2.png)
_6th_April_Morning_Shift_en_16_3.png)
_6th_April_Morning_Shift_en_16_4.png)
Explanation
A semiconductor start conduction more as the temperature increases. It means resistance decreases with increase in temperature. So if temperature increases, its resistivity decreases.
Also, $$ \rho=\frac{m}{n e^2 \tau} $$
as temperature increases, $\tau$ decreases but $n$ increases and $n$ is dominant over $\tau$.
_6th_April_Morning_Shift_en_16_5.png)
$\therefore$ Option (a) is correct.
Also, $$ \rho=\frac{m}{n e^2 \tau} $$
as temperature increases, $\tau$ decreases but $n$ increases and $n$ is dominant over $\tau$.
$\therefore$ Option (a) is correct.
Comments (0)
