NEET Physics Semiconductor Electronics MCQs Set A

Question: The conductivity of a semiconductor increases with increase in temperature because a) number density of carries increases, relaxation time decreases but effect of decrease in relaxation time is much less than increase in number density b) both number density…

NEET Physics Semiconductor and P N Junction Diode MCQs Set A

Question:  In a semiconductor a) there are no free electrons at 0 K b) there are no free electrons at any temperature c) the number of free electrons increases with pressure d) the number of fre electrons is more than that in a conductor Answer: there are…

NEET Physics Junction Transistor MCQs Set A

Question: The transistor are usually made of a) metal oxides with high temperature coefficient of resistivity b) metals with high temperature coefficient of resistivity c) metals with low temperature coefficient of resistivity d) semiconducting materials having low…