Neco Model Questions Vol1 2021 Physics Question 15
Practice objective / multiple choice question 15 from the 2021 Neco Model Questions Vol1 Physics examination.
A metal rod of length \(1.00\ \text{m}\) at \(20^{\circ}\text{C}\) expands to \(1.0025\ \text{m}\) when heated to \(120^{\circ}\text{C}\). The rod forms the capillary of a liquid‑in‑glass thermometer, and the rise of the liquid column is directly proportional to the change in length of the capillary. The thermometer shows a rise of \(5.0\ \text{cm}\) for the temperature change from \(20^{\circ}\text{C}\) to \(120^{\circ}\text{C}\). (a) Calculate the coefficient of linear expansion \(\alpha\) of the metal (in \(\text{°C}^{-1}\)). (b) Predict the rise of the liquid column when the temperature is increased from \(20^{\circ}\text{C}\) to \(200^{\circ}\text{C}\).
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About This Question
This is Neco Model Questions Vol1 2021 Physics Question 15. It is one of the objective questions from the 2021 Neco Model Questions Vol1 Physics examination.
Difficulty level: Medium .
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