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Questions  

Silicon P-N junction diode is preferred to germanium junction diode, because 

a
Silicon diode is cheaper than germanium diode.
b
Forbidden energy gap (Eg) in silicon diode is more tan that in germanium diode
c
For bidden energy gap (Eg) in silicon diode is less than that in germanium diode.
d
Silicon diode is not breakable.

detailed solution

Correct option is B

Energy gap is silicon diode (Eg) is more than that in germanium diode. As a result silicon diode has more thermal stability

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