Question

Is the ratio of number of holes and the number of conduction electrons in an n-type extrinsic semiconductor is always less than 0.25.

• A. True
• B. False

Answer 1

The correct option is B False

In an n-type semiconductor, number of electrons are much larger than number of holes i.e, $\frac{holes}{electrons}<<1$.
It is not necessarily less than 0.25, so the answer is false.