Question
Physics Question on Thermal Expansion
Each side of a box made of metal sheet in cubic shape is 'a' at room temperature 'T', the coefficient of linear expansion of the metal sheet is ' α′. The metal sheet is heated uniformly, by a small temperature ΔT, so that its new temperature is T+ΔT. Calculate the increase in the volume of the metal box.
A
3a3αΔT
B
4a3αΔT
C
4πa3αΔT
D
34πa3αΔT
Answer
3a3αΔT
Explanation
Solution
The correct option is(A): 3a3αΔT.
ΔV=VγΔT
ΔV=3a3αΔT