Physics Group - II (3110018) MCQs

MCQs of Electronic Materials

Showing 21 to 23 out of 23 Questions
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21.

The valence electrons of metallic atoms are.........in the spaces between the atoms. 

(a)

freely move
(b)

difficult to move
(c)

will not move
(d)

none
Answer:

Option (a)

22.

According to quantum theory, the electrical conductivity of a metal is due to those free electrons which are very close to

(a)

acceptor energy level
(b)

Fermi surface only
(c)

valence band
(d)

none
Answer:

Option (b)

23.

The applied electrical field on a metal.............the velocity of electrons present near the Fermi level.

(a)

decreases
(b)

enhances
(c)

both a and b
(d)

none
Answer:

Option (b)

Showing 21 to 23 out of 23 Questions
1 2 3