Consider the following statements
1) In a semiconductor with an increase in temperature the scattering of charge carriers due to ionized impurity increases
2) In a semiconductor with an increase in temperature the scattering due to phonons/lattice decreases
3) In a semiconductor with an increase in temperature the scattering of charge carriers due to ionized impurity decreases
4) In a semiconductor with an increase in temperature the scattering due to phonons/lattice increases.
Which of the following is/are correct?
1
1 and 2
2
3 and 4
3
1 and 4
4
2 and 3