JEE Main 2019PhysicsMathematics in PhysicsEasyMCQ

JEE Main 2019 — Mathematics in Physics Question with Solution

JEE Main 2019 (09 Apr Shift 2)

Question

The area of a square is 5.29 cm2. The area of 7 such squares taking into account the significant figures is:

Choose an option

Show full solutionCorrect option: A
Correct answer
A37.03 cm2

Step-by-step explanation

Given,
Area of square =5.29 cm2
Area of 7 square =5.29+5.29+5.29+5.29+5.29+5.29+5.29=37.03 cm2
{5.29 has 2 significant digits after decimal. Accordingly, the answer should also have two significant digits after decimal}.

Practice this on the real CBT interface

Solve this JEE Main question (and the rest of the Mathematics in Physics chapter) on PrepSharp's TCS iON-style CBT player — with timer, bookmarks and session analytics.

Solve interactively →

About this question

This is a previous-year question from JEE Main 2019, 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.