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A cubical metal solid block is heated. How will its volume change? - Physics

Answer in Brief

A cubical metal solid block is heated. How will its volume change?

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Solution

When a solid is heated, it expands in all directions. The volume of a cube also increases.
Let V0 be the volume of cube of side L0 at 0°C. i.e. V0 = L30 – V
When temperature increases to t°C each side increases to Vt
∴ Vt = L3t
Increase in volume = (Vt — V0) [L3t — L30]
Increase in temperature = (t — O)°C = t°C

Concept: Thermal Expansion - Volume Expansion
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APPEARS IN

Selina Concise Physics Class 8 ICSE
Chapter 6 Heat Transfer
Short/long Answer Questions | Q 27 | Page 121
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