JEE Main 2018PhysicsMathematics in PhysicsEasyMCQ

JEE Main 2018 — Mathematics in Physics Question with Solution

JEE Main 2018 (16 Apr Online)

Question

The percentage errors in quantities P, Q, R and S are 0.5%, 1%, 3% and 1.5% respectively in the measurement of a physical quantity A= P 3 Q 2 R S . The maximum percentage error in the value of A will be:

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Show full solutionCorrect option: A
Correct answer
A6.5 %

Step-by-step explanation

100×∆AA=3∆PP+2∆QQ+12∆RR+∆SS ×100

max percentage error, A =3 ×0.5+2 ×1+12 ×3+1.5

=1.5+2+1.5+1.5

= 6.5 %

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About this question

This is a previous-year question from JEE Main 2018, 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.