Question:
Which of the following represents correct order of conductivity in solids?
(i) κ metals >> κ insulators< κsemiconductors
(ii) κmetals<< κinsulators < κsemiconductors
(iii) κmetals κsemiconductors> κinsulators = zero
(iv) κ metals< κ semiconductors > κinsulators ≠ zero
Solution:
Option (i) κ metals >> κ insulators< κsemiconductors is the answer.