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Saturday, 31 October

JEE Main 2023 · PhysicsMultiple choiceDiagram basedEasyData or graph

JEE Main 6 April 2023, Shift 1, Physics Q41

Question 41 of 90 in this shift, Physics question 11 of 30, Section A.

The resistivity (ρ\rho) of semiconductor varies with temperature. Which of the following curve represents the correct behaviour

The figure, in words

Four rho vs T graphs given as options.
  1. (1)[figure: graph of rho vs T, straight line decreasing from top-left to bottom-right]
  2. (2)[figure: graph of rho vs T, straight line rising, starting from a positive intercept on the T axis]
  3. (3)[figure: graph of rho vs T, convex curve rising from near origin, increasing steeply at high T]
  4. (4)[figure: graph of rho vs T, curve decreasing steeply at first then flattening (decaying curve)]Official answer

Official answer

Option 4

NTA final key.

Chapter
Semiconductor Electronics: Materials, Devices and Simple Circuits
Topic
Ohm's Law and Resistance
Idea tested
Temperature Dependence in Semiconductors

Same idea in other shifts

Asked 2× in all
  1. 1 Feb 2024, Shift 2 · Q49To measure the temperature coefficient of resistivity α\alpha of a semiconductor, an electrical arrangement shown in the figure is…MediumDiagram basedHas a figure

Question text from the official JEE Main paper published by NTA; answer from the final answer key. Chapter, topic and idea tags, difficulty and skill are Lumi’s. This question needs a figure we do not reproduce; it is described in words above. Lumi analyses 108 of the 174 JEE Main shifts held from 2017 to 2026.