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Question

The energy gap in case of which of the following is less than 3eV?

A
Aluminium
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B
Iron
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C
Germanium
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D
Copper
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Solution

The correct option is C Germanium
Energy gap of most of the semiconductors is nearly 1.1eV which is less than 3eV.
As we know germanium is a semiconductor and its energy gap is 0.67eV. Thus germanium is the right answer.

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