Question
Match List - I with List - II.
List - I (System) List - II (Density of States) A. Bulk semiconductor I. 
B. Quantum well II. 
C. Quantum wire III. 
D. Quantum dot IV. 
Choose the correct answer from the options given below :
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CUET PG 2026 Agri-Business Management Question Paper (25-Mar-2026) (Shift 2)
The correct answer is
A-III, B-II, C-IV, D-I
To solve this question, we need to match the systems in List - I with their corresponding density of states in List - II:
-
Bulk Semiconductor: In a three-dimensional system like a bulk semiconductor, the density of states (DOS) increases with the square root of energy, typically represented by a parabolic curve. This matches with IV.
-
Quantum Well: Also known as a two-dimensional electron system, in a quantum well, the DOS is a step function because electronic states are confined to two dimensions. This matches with II.
-
Quantum Wire: In a one-dimensional system like a quantum wire, the DOS has a series of spikes because of the one-dimensional confinement, each spike corresponding to a sub-band. This matches with I.
-
Quantum Dot: In a zero-dimensional system like a quantum dot, the DOS consists of discrete levels because all dimensions are quantized. This matches with III.
Therefore, the correct answer is A-III, B-II, C-IV, D-I.
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