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Saturday, 31 October

JEE Main 2024 · PhysicsMultiple choiceSingle correctMediumCalculation

JEE Main 1 February 2024, Shift 1, Physics Q50

Question 50 of 90 in this shift, Physics question 20 of 30, Section A.

The radius (r), length (ll) and resistance (R) of a metal wire was measured in the laboratory as r = (0.35±0.05)(0.35 \pm 0.05) cm R = (100±10)(100 \pm 10) ohm ll = (15±0.2)(15 \pm 0.2) cm The percentage error in resistivity of the material of the wire is :
  1. (1)39.9%Official answer
  2. (2)25.6%
  3. (3)37.3%
  4. (4)35.6%

Official answer

Option 1

NTA final key.

Chapter
Units and Measurements
Topic
No close match in our taxonomy
Idea tested
No close match in our taxonomy

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. Lumi analyses 108 of the 174 JEE Main shifts held from 2017 to 2026.