A pure semiconductor behaves slightly as a conductor at
A
Room temperature
B
Low temperature
C
High temperature
D
Both (b) and (c)
[CBSE PMT 1996; AIEEE 2002]
Download our app for free and get started
A
Room temperature
At room temperature some covalent bond breaks and semiconductor behaves slightly as a conductor.
Download our app
and get started for free
Experience the future of education. Simply download our apps or reach out to us for more information. Let's shape the future of learning together!No signup needed.*
For a thermionic emitter (metallic) if $J$ represents the current density and $T$ is its absolute temperature then the correct curve between $\log _e \frac{J}{T^2}$ and $\frac{1}{T}$ is
The width of forbidden gap in silicon crystal is $1.1\ eV$. When the crystal is converted in to a $N$-type semiconductor the distance of Fermi level from conduction band is
A semiconductor device is connected in a series circuit with a battery and a resistance. A current is found to pass through the circuit. If the polarity of the battery is reversed, the current drops almost to zero. The device may be