JEE Main 2019PhysicsMechanical Properties of SolidsEasyMCQ

JEE Main 2019 — Mechanical Properties of Solids Question with Solution

JEE Main 2019 (10 Apr Shift 2)

Question

The elastic limit of brass is 379 MPa. The minimum diameter of a brass rod if it is to support a 400 N load without exceeding its elastic limit will be

Choose an option

Show full solutionCorrect option: C
Correct answer
C1.16 mm

Step-by-step explanation

Stress =FA
Elastic limit is 379 MPa
⇒379×106=400A=400πd2/4
d=400×4π×379×106
=1.16×10-3 m
=1.16 mm

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About this question

This is a previous-year question from JEE Main 2019, covering the Mechanical Properties of Solids 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.