Search any question & find its solution
Question:
Answered & Verified by Expert
Choose the only false statement from the following
Options:
Solution:
1043 Upvotes
Verified Answer
The correct answer is:
The resistivity of a semiconductor increases with increase in temperature
(a) In insulators energy gap is of the order of 5 to 10 eV and it is practically impossible to impart this much amount of energy to the electrons in valence band.
So, as to jump to conduction band.
So, choice (a) is correct.
(b) In semiconductors with the rise in temperature more electrons from valence band jump to conduction band and this results is increase in conductivity. So, choice (b) is correct.
(c) In conductors, the conduction band is either partially filled or the conduction band overlaps on the valence band. So, choice (c) is correct.
(d) In semiconductor, resistivity decreases with increase in temperature.
So, choice (d) is wrong.
So, as to jump to conduction band.
So, choice (a) is correct.
(b) In semiconductors with the rise in temperature more electrons from valence band jump to conduction band and this results is increase in conductivity. So, choice (b) is correct.
(c) In conductors, the conduction band is either partially filled or the conduction band overlaps on the valence band. So, choice (c) is correct.
(d) In semiconductor, resistivity decreases with increase in temperature.
So, choice (d) is wrong.
Looking for more such questions to practice?
Download the MARKS App - The ultimate prep app for IIT JEE & NEET with chapter-wise PYQs, revision notes, formula sheets, custom tests & much more.