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MHT CET 2026 (19 May, Shift 1) · Intrinsic & Extrinsic Semiconductors

Intrinsic & Extrinsic Semiconductors question from MHT CET 2026 (19 May, Shift 1)

Q11MHT CET 2026 · 19 MAY · SHIFT 1Medium

Intrinsic & Extrinsic Semiconductors

The band diagrams of three semiconductors p, n and intrinsic are given in the figures (1), (2) and (3). C and V are the conduction and valence bands and $E_F$ is the Fermi level. Figures, from (2),(1) and (3) respectively represent the type of semiconductors as

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Answer: (b)

Intrinsic: $E_F$ lies midway between C and V. n-type: $E_F$ near C. p-type: $E_F$ near V.
Figure (2): $E_F$ just above V, so p-type.
Figure (1): $E_F$ in the middle, so intrinsic. Figure (3): $E_F$ just below C, so n-type.
So (2), (1), (3) are p, intrinsic and n: the answer is (b).

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