JEE Main 2024PhysicsMathematics in PhysicsEasyMCQ

JEE Main 2024 — Mathematics in Physics Question with Solution

JEE Main 2024 (31 Jan Shift 1)

Question

If the percentage errors in measuring the length and the diameter of a wire are 0.1% each. The percentage error in measuring its resistance will be:

Choose an option

Show full solutionCorrect option: B
Correct answer
B0.3%

Step-by-step explanation

Resistance of the wire in terms of the diameter can be written as, R=ρLπd24

Hence, percentage error relation will be, ∆RR×100=∆LL×100+2∆dd×100

Given: ∆LL=0.1% and ∆dd=0.1%

Therefore, ∆RR=0.3%

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About this question

This is a previous-year question from JEE Main 2024, covering the Mathematics in Physics chapter of Physics. PrepSharp catalogues every PYQ from JEE Main with a verified answer key and step-by-step solution prepared by IIT alumni — so you can search by chapter, topic or year and revise efficiently.