1) calculate from the output chracterstics graph , the values of current amplification factor given Vce= 2v 2.) calculate the input resistanceof the transistor operating at Vce=4V from the input chracterstics graph

Just see the variation in the values Ic with respect to Ib and divide change in Ic BY change in Ib and one can get currebt amplification factor for a particular VcE.

 

 

For input resistance divide cahange in VBE from corresonding cahange in IB.