JEE Main 2022 · PhysicsNumerical answerNumerical valueEasyCalculation

JEE Main 25 June 2022, Shift 2, Physics Q51

Question 51 of 90 in this shift, Physics question 21 of 30, Section B.

For

z =a^2x^3y^{\frac{1}{2}}

, where ‘

a

’ is a constant. If percentage error in measurement of ‘

x

’ and ‘

y

’ are 4% and 12%, respectively, then the percentage error for ‘

z

’ will be ____________%.

Official answer

NTA final key.

Chapter: Units and Measurements
Topic: Ohm's Law and Resistance
Idea tested: Error Analysis in Ohm's Law

Same idea in other shifts

Asked 7× in all

5 Apr 2026, Shift 2 · Q27In an experiment to determine the resistance of a given wire using Ohm's law, the voltmeter and ammeter readings are noted as 10 V and 5…EasySingle correct
29 Jan 2024, Shift 1 · Q31The resistance $R=\frac{V}{I}$ where $V=(200\pm5)$ V and $I=(20\pm0.2)$ A, the percentage error in the measurement of R is :EasySingle correct
6 Apr 2023, Shift 1 · Q46Two resistances are given as $R_1=(10\pm0.5)\,\Omega$ and $R_2=(15\pm0.5)\,\Omega$ . The percentage error in the measurement of equivalent…MediumSingle correct
25 Jul 2022, Shift 2 · Q49The maximum error in the measurement of resistance, current and time for which current flows in an electrical circuit are 1%, 2% and 3%…EasySingle correct
27 Jun 2022, Shift 1 · Q33A silver wire has a mass $(0.6\pm0.006)$ g, radius $(0.5\pm0.005)$ mm and length $(4\pm0.04)$ cm. The maximum percentage error in the…EasySingle correct
5 Sep 2020, Shift 1 · Q1A physical quantity $z$ depends on four observables a, b, c and d, as $z = \frac{a^2 b^{\frac{2}{3}}}{\sqrt{c}\, d^3}$ . The percentages of…EasySingle correct

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.