Answer:
Mobility of the minority carriers, 
Diffusion coefficient for minority carriers,
Verified from Einstein relation as 
Explanation:
Length of sample, 
Separation between the two probes, L = 1.8 cm
Drift time, 
Applied voltage, V = 5 V
Mobility of the minority carriers ( electrons), 
Where the drift velocity, 

and the Electric field strength, 
E = 5/2
E = 2.5 V/cm
Mobility of the minority carriers:

The electron diffusion coefficient, 
, where Δt = separation of pulse seen in an oscilloscope in time( it should be in micro second range)


For the Einstein equation to be satisfied, 

Verified.