In a pure semiconductor the number of conduction electrons is `6xx10^(19)`per cubic metre.How many holes are there in a sample of size `1cmxx1cmxx1mm?`

Explanation

In a pure semiconductor, the of conduction electrons = number of hples .
Given value
` = 1 cm xx 1 cm xx 1 mm`
` = 1 xx 10^(-2) xx 1 xx 10^(-2) xx 1 xx 10^(-3)`
`= 10^(-7)m^(3)`
Number of electrons
` = 6 xx 10^(19) xx 10(-7) =6 xx 10^(12)`
honce number of holes
` = 6 xx 10^(12)`