Imagine a cube of length $ l $ that expands equally in all directions when its temperature increases by $ \Delta T $. If the coefficient of linear expansion is $ \alpha_l $, which equation corre

Question

Imagine a cube of length $ l $ that expands equally in all directions when its temperature increases by $ \Delta T $. If the coefficient of linear expansion is $ \alpha_l $, which equation correctly represents the change in volume $ \Delta V $ of the cube, assuming $ \Delta l $ is small compared to $ l $?

Accepted Answer

$ \Delta V = 3l^2 \Delta l $

Answer

$ \Delta V = 2l^2 \Delta l $

Answer

$ \Delta V = l^2 \Delta l $

Answer

$ \Delta V = 4l^2 \Delta l $

NEET Physics Thermal Expansion MCQ Question

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