In `NPN` transistor, if doping in base region is increased then collector current

In CE transistor amplifier if the base current is increased by 20muA, the collector current changes from 4 mA to 5 mA. The current gain of the transistor is

In a transistor, doping level in base is increased slightly. Now will it affect collector current?

In a transistor doping level in base is increased slightly. How will it affect collector current

In a transistor, doping level in base is increased slightly. How will it affect (i) collector current and (ii)base current?

In a transistor, doping level in base is increased slightly. How will it affect (i) collector current and (ii)base current?