JEE Main 2022PhysicsMathematics in PhysicsEasyMCQ

JEE Main 2022 — Mathematics in Physics Question with Solution

JEE Main 2022 (27 Jul Shift 1)

Question

A torque meter is calibrated to reference standards of mass, length and time each with 5% accuracy. After calibration, the measured torque with this torque meter will have net accuracy of 

Choose an option

Show full solutionCorrect option: B
Correct answer
B25%

Step-by-step explanation

Dimensional formula for Torque

τ=ML2 T-2

Now the percentage error in torque can be calculated by

τ%=1×∆MM+2×∆LL+2×∆TT×100⇒τ%=25%

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About this question

This is a previous-year question from JEE Main 2022, 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.