The elastic limit of brass is $379 \mathrm{MPa}$. What should be the minimum diameter of a brass rod if it is to support a 400 $\mathrm{N}$ load without exceeding its elastic limit?

Question:

The elastic limit of brass is $379 \mathrm{MPa}$. What should be the minimum diameter of a brass rod if it is to support a 400 $\mathrm{N}$ load without exceeding its elastic limit?

1. $1.00 \mathrm{~mm}$

2. $1.16 \mathrm{~mm}$

3. $0.90 \mathrm{~mm}$

4. $1.36 \mathrm{~mm}$

JEE Main Previous Year Single Correct Question of JEE Main from Physics Mechanical Properties of Solids chapter.

JEE Main Previous Year 10 April 2019

Correct Option: 2

Solution: