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Mobility of free electron is greater than the holes because A) they carry negative chargeB) electrons are lightC) electrons requires low energy for their motionD) none of these

Pawan joshi , 6 Years ago
Grade 12th pass
anser 1 Answers
mahima pareek

Last Activity: 6 Years ago

It would be B) electrons are light (mass wise) 
As we consider holes as the deficiency of positive charge , holes mass is considered to be the mass of a proton ( there is actually no mass of a hole, but something was necessary to be considered
to define things) therefore we know that electrons are lighter than protons, so electrons are lighter than holes too. 

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