Neco Model Questions Vol1 2021 Physics Question 17
Practice objective / multiple choice question 17 from the 2021 Neco Model Questions Vol1 Physics examination.
A glass tube of uniform cross‑section is closed at one end and open at the other. The open end is exposed to atmospheric pressure of \(101.3\ \text{kPa}\). The tube contains a column of mercury of height \(0.80\ \text{m}\) supporting a trapped air pocket of volume \(2.0\times10^{-4}\ \text{m}^{3}\) at \(20^{\circ}\text{C}\). The trapped air is heated to \(80^{\circ}\text{C}\), causing the mercury level to fall by \(0.12\ \text{m}\). Assuming the density of mercury is \(13\,600\ \text{kg m}^{-3}\) and neglecting the volume change of the mercury, determine the final pressure of the trapped air (in kPa).
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About This Question
This is Neco Model Questions Vol1 2021 Physics Question 17. It is one of the objective questions from the 2021 Neco Model Questions Vol1 Physics examination.
Difficulty level: Medium .
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