An electromagnetic wave of free space wavelength 0.5mm propagates through a piece of indium antimonide that is placed in an axial magnetic field. There is resonant absorption of the elctromagnetic wave at a magnetic field, B = 0.323 wb m-2.
a) Explain what is the effective mass of the particle in question?
b) Presume that the collision time is 4*10-12 seconds, Compute the mobility.
c) Is the resonance sharp? What is your criterion?