NCERT Class XII Chapter
Semiconductor Electronics
Questions With Solutions

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Question : 3
Total: 19
Carbon, silicon and germanium have four valence electrons each. These are characterised by valence and conduction bands separated by energy band gap respectively equal to (Eg)C,(Eg)Si and (Eg)Ge. Which of the following statements is true?
Solution:  
The energy band gap is largest for carbon, less for silicon and least for germanium.
So, the correct statement is (c).
(Eg)C >(Eg)Si> (Eg)Ge
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