Correct Answer : Option (D) : (Ωm)-1
Explanation : The formula of the conductivity is the σ=1/ρ.So, the unit of resistivity is Ωm.Now, the unit of conductivity becomes the inverse of resistivity.
Correct Answer : wavelength of the incident radiation
Correct Answer : zinc sulphide
Correct Answer : emitter base : forward, collector base : reverse