Semiconductor Electronics — CBSE Class 12 Physics Important Questions & Revision Notes

At absolute zero temperature, an intrinsic semiconductor behaves as a:

The forbidden energy gap in germanium (Ge) at room temperature is approximately:

To obtain p-type semiconductor, a pure semiconductor is doped with:

In a p-n junction diode under reverse bias:

The primary function of a Zener diode is to act as a:

Which of the following gates is called a universal logic gate?

The ripple frequency in a full-wave rectifier is:

In an n-p-n transistor, the majority charge carriers in the base region are:

The relation between current amplification factors $\alpha$ and $\beta$ of a transistor is:

The electrical conductivity of a semiconductor increases with rise in temperature because: