Answer :

For A.) and B.)


The formation of the new holes and conduction electrons happens continuously and throughout the materials because the heat of room temperature affects all region of the material equally. Therefore, option A is correct and B is incorrect.


For C.) and D.)


In the depletion region the electrons-hole pairs produced move away from each other due to the force of electric field. Thus, holes and conduction electrons do not recombine continuously throughout the material and option D.) is correct and C.) is wrong.

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