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Saturday, 31 October

JEE Main 2023 · PhysicsMultiple choiceSingle correctMediumCalculation

JEE Main 8 April 2023, Shift 1, Physics Q40

Question 40 of 90 in this shift, Physics question 10 of 30, Section A.

A cylindrical wire of mass (0.4±0.01) g(0.4\pm0.01)\ \mathrm{g} has length (8±0.04) cm(8\pm0.04)\ \mathrm{cm} and radius (6±0.03) mm(6\pm0.03)\ \mathrm{mm}. The maximum error in its density will be:
  1. (1)1%1\%
  2. (2)3.5%3.5\%
  3. (3)4%4\%Official answer
  4. (4)5%5\%

Official answer

Option 3

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.