First slide

Thermal expansion

Question

A thin copper wire of length L increases in length by one percent when heated from t₁°C and t₂°C. The percentage change in area when a thin copper plate having dimension 2L × L is heated from t₁°C to t₂°C is

Moderate

A

1 %
B

3 %
C

2 %
D

4%

Solution

$ΔA = A β Δt \Rightarrow \frac{ΔA}{A} \times 100 = βΔt \times 100$

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