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Carbon,silicon and germanium have four valence electrons each. At room temperature which one of the following statements is most appropriate?
Options
(a) The number of free electrons for conduction is significant only in Si and Ge but small in C
(b) The number of free conduction electrons is significant in C but small in Si and Ge
(c) The number of free conduction electrons is negligibly small in all the three
(d) The number of free electrons for conduction is significant in all the three.
Correct Answer:
The number of free electrons for conduction is significant only in Si and Ge but small in C
Explanation:
No explanation available. Be the first to write the explanation for this question by commenting below.
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Topics: Electronic Devices
(124)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- A circular disc X of radius R is made from an iron plate of thickness t and another disc
- The two ends of a metal rod are maintained at temperatures 100°C and 110°C.
- The electric field in a certain region is given by E=5i ̂-3ĵ kV/m. The potential
- A p-n photodiode is made of a material with a band gap of 2.0 eV
- To obtain a p-type semiconductor, germanium must be doped with
Topics: Electronic Devices (124)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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