Question

What is coefficient of cubical expansion

Answer 1

Answer:

The coefficient of cubical expansion is generally defined as. The increment in volume of a unit volume of solid, liquid, or gas for a rise of temperature of 1° at constant pressure.

Answer 2

Answer:

Explanation:

Coefficient of cubical expansion is the fraction of volume increased when a body is heated or it can be defined as the increase in volume of a unit volume of solid, liquid, or gas for a rise of temperature of 1° at constant pressure.

Its SI unit is β where β is /C⁰

DERIVATION :-

Consider a metallic body of volume = V1. Let it’s temperature is raised by ΔT. Then experimentally “Increase in volume (ΔV) is directly proportional to its initial volume (V1) and rise in temperature (ΔT).

ΔV α V1

ΔV α ΔT

ΔV α V1 ΔT

OR

β = ΔV/V1 ΔT