CLASSICAL FREE ELECTRON THEORY

Question 1

CLASSICAL FREE ELECTRON THEORY IS USED TO EXPLAIN ?

Answer 1

THE OHMS LAW.
ELECTRICAL AND THERMAL CONDUCTIVITIES OF THE METAL.
WEIDMANN FRANZ LAW ( DERIVE THEM ).
OPTICAL PROPERTIES OF THE METAL.

Question 2

THE CLASSICAL FREE ELECTRON THEORY FAILED TO EXPLAIN ?

Answer 2

IT FAILED TO EXPLAIN THE THEORY OF

• BLACK BODY RADIATION
• PHOTOELECTRIC EFFECT
• COMPTON EFFECT
• ELECTRICAL CONDUCTIVITY OF SEMICONDUCTORS AND INSULATORS

Question 3

MENTION ANY 4 POSTUALTES OF CLASSICAL FREE ELECTRON THEORY ?

Answer 3

-THEY OBEY THE KINETIC THEORY OF GASES
-VELOCITY AND ENERGY DISTRIBUTION OF
ELECTRONS ARE GOVERNED BY MAXWELLS
DISTRIBUTION FUNCTION .
-MOVE RANDOMLY IN ALL DIRECTIONS
-METAL CONSIST OF AMPLE NUMBER OF THE FREE
ELECTRONS.

Question 4

THE ELECTRONS IN THE INNER SHELLS ARE KNOWN AS ?

Answer 4

CORE ELECTRONS

Question 5

THE ELECTRONS PRESENT IN THE OUTER SHELL IS KNOWN AS ?

Answer 5

VALENCE ELECTRONS

Question 6

THE FREE ELECTRON MOVES TOWARDS WHICH DIRECTION OF CIRCUIT?

Answer 6

THE FREE ELECTRON MOVES TOWARDS POSITIVE CELL OR BATTERY IN THE CIRCUIT .