JAMB Physics 2022 Objective — Question 9
Question 9 of 41 from the Joint Admissions and Matriculation Board (JAMB) Physics 2022 Objective paper, with the correct answer and a full explanation.
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Glass bottle of initial volume 2×10⁴ cm³ heated from 20°C to 50°C. Linear expansivity=9×10⁻⁶ °C⁻¹. Volume at 50°C:
- A. 20013.5 cm³
- B. 20016.2 cm³Correct
- C. 2005.4 cm³
- D. 20008.1 cm³
Explanation
γ=3α=27×10⁻⁶; ΔV=V₀γΔT=2×10⁴×27×10⁻⁶×30=16.2 cm³; V₂=20016.2 cm³.
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