The co efficient of linear expansion is equal to__________?
Correct answer: B. ΔL/LΔT
- A. ΔL = αLΔT
- B. ΔL/LΔT
- C. LΔT/ΔL
- D. αLΔT-ΔL
Explanation
From linear expansion, ΔL = αLΔT, so the coefficient is α = ΔL/(LΔT), with unit K^-1. Option a is the full expansion equation rather than the coefficient itself, which is the likely reason for choosing it.
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About Thermal Equilibrium and Heat
Thermal equilibrium means that bodies in contact have the same temperature and no net heat flows between them. The topic distinguishes heat from temperature, uses the zeroth law of thermodynamics, and covers heat transfer, specific heat capacity, thermal expansion and the conditions for reaching equilibrium.
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