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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