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JEE Main 2024 · PhysicsMultiple choiceSingle correctMediumApplication

JEE Main 9 April 2024, Shift 1, Physics Q49

Question 49 of 90 in this shift, Physics question 19 of 30, Section A.

One main scale division of a vernier caliper is equal to m units. If

n^{th}

division of main scale coincides with

(n+1)^{th}

division of vernier scale, the least count of the vernier caliper is :

(1) $\frac{1}{(n+1)}$
(2) $\frac{m}{(n+1)}$ Official answer
(3) $\frac{n}{(n+1)}$
(4) $\frac{m}{n(n+1)}$

Official answer

Option 2

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 42 of the 174 JEE Main shifts held from 2017 to 2026.