First slide

Thermal expansion

Question

Upon heating, the length of the side of a cube changes by 2%. The volume of the cube changes by

Easy

A

1%
B

6%
C

0.5%
D

4%

Solution

% change in length $\large \frac {\Delta l}{l}\times 100=2%$
We have % change in volume
$\large \frac {\Delta V}{V}\times 100=3\left ( \frac {\Delta l}{l}\times 100 \right )=3(2)=6%$

Get Instant Solutions

When in doubt download our app. Now available Google Play Store- Doubts App

Recieve an sms with download link

Doubts App

OR

SCAN ME

Doubts App

Doubts App