Discussion Forum



1)

Among the following the incorrect statement


A) Density of crystal remains unaffected due to Frenkel defect

B) In BCC unit cell the void space is 32%

C) Density of crystal s decreases due to Schottky defect

D) Electrical conductivity of semiconductors and metals increases with increase in temperature

Answer:

Option D

Explanation:

The electrical resistance of metals depends upon temperature. Electrical resistance decreases with a decrease in temperature and becomes zero near the absolute  temperature  . The material in this state is said to possess superconductivity