Question

define depletion layer

Answer 1

Depletion layar Is a resion in a P-N junction dioled where no mobile charge are present.It acts like a brriar that opposes the flow of the electron from n side on hole of p side.
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Answer 2

depletion of ozone layer means that the ozone layer is getting smaller and reduced
ozone layer is made of of trioxide molecules O3
when these molecules are broken down into O2+O
then it is known as depletion of ozone