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Question
Assertion :Semiconductors are the solids with conductive in the intermediate rage from 10−6 to 104 ohm−1m−1. Reason: In case of semiconductors, the gap between the valence band and conduction band is small.
Assertion :Semiconductors are the solids with conductive in the intermediate rage from 10−6 to 104 ohm−1m−1. Reason: In case of semiconductors, the gap between the valence band and conduction band is small.
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Solution
The correct option is A Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
Range of conductivity of different materials is given by:
Conductors: 104–107 Ω−1m−1
Insulators: 10−20–10−10 Ω−1m−1
Semiconductors: 104–107 Ω−1m−1
In case of conductors, the valence and conduction bonds
overlaps each other. In case of semiconductors, there is a small gap in valence
band and conduction band. In case of insulators, there is a large gap between
valence band and conduction band.
Range of conductivity of different materials is given by:
Conductors: 104–107 Ω−1m−1
Insulators: 10−20–10−10 Ω−1m−1
Semiconductors: 104–107 Ω−1m−1
In case of conductors, the valence and conduction bonds overlaps each other. In case of semiconductors, there is a small gap in valence band and conduction band. In case of insulators, there is a large gap between valence band and conduction band.
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