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which of the following represents co...

which of the following represents correct order of conductivity in solids ?

A

`K_("metals") gt gt K_("insulators") lt K_("semiconductors)`

B

`K_("metals") lt lt K_("insulators") lt K_("semiconductors")`

C

`K_("metals"), K_("semiconductors") gt k_("insulators") =` zero

D

`K_("metals") lt K_("semiconductors") gt K_("insulators") ne` zero

Text Solution

Verified by Experts

The correct Answer is:
A
Conductivity of metal, insulator and semiconductors can be represented in the term of k (Kappa) which depends upon energy gap between valence band and conduction brand.

Hence, correct order is-
`k_("metals") gt gt k_("insulators") lt lt k_("semiconductors")`
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