Transistor is a device used as switch or amplifier.
It is made by sandwiching three semiconductors, i.e.
p−n−p and
n−p−n.
Hence, Statement I is false, because we cannot make transistor from diode.
As we know that, amplification factor
(β) is the ratio of collector current to base current.
∴ β= Hence, Statement II is true. Therefore, option (a) is correct.