Question

Match List-I with List-II 

List-I	Concept	List-II	Description
A	Hall effect	IV	Sign and density of charge carriers
B	Fermi-Dirac statistics	III	Free electron gas
C	Phonon	I	Quantum of lattice vibration
D	Work function	II	Energy required to remove electron from metal surface

• A. A-IV, B-III, C-I, D-II
• B. A-I, B-II, C-III, D-IV
• C. A-II, B-IV, C-I, D-III
• D. A-III, B-I, C-IV, D-II

Hint:

Hall effect identifies charge carrier type, and phonon is the quantum of lattice vibration.

Answer 1

The Correct Option is A

Concept:
These are important terms from solid state physics and electronic properties of materials.

Step 1: Hall effect.
Hall effect is used to determine the sign and density of charge carriers. \[ A\rightarrow IV \]

Step 2: Fermi-Dirac statistics.
Fermi-Dirac statistics is used to describe free electron gas because electrons are fermions. \[ B\rightarrow III \]

Step 3: Phonon.
Phonon is the quantum of lattice vibration. \[ C\rightarrow I \]

Step 4: Work function.
Work function is the minimum energy needed to remove an electron from a metal surface. \[ D\rightarrow II \] Therefore: \[ A-IV,\ B-III,\ C-I,\ D-II \] \[ \therefore \text{Correct Answer is (A)} \]