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Saturday, 31 October

JEE Main 2023 · PhysicsMultiple choiceSingle correctMediumCalculation

JEE Main 10 April 2023, Shift 2, Physics Q39

Question 39 of 90 in this shift, Physics question 9 of 30, Section A.

In an experiment with vernier calipers of least count 0.1 mm, when two jaws are joined together the zero of vernier scale lies right to the zero of the main scale and 6th division of vernier scale coincides with the main scale division. While measuring the diameter of a spherical bob, the zero of vernier scale lies in between 3.2 cm and 3.3 cm marks, and 4th division of vernier scale coincides with the main scale division. The diameter of bob is measured as
  1. (1)3.263.26 cm
  2. (2)3.253.25 cm
  3. (3)3.223.22 cm
  4. (4)3.183.18 cmOfficial answer

Official answer

Option 4

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.