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Topic 5 – Pressure Page | 1 IGCSE Physics 0625 Paper 2 Pastpapers-2020 www.HakimAbbas.site Topic 5 – Pressure 1 1 2 2Air is trapped in a cylinder by a piston. The original volume of the trapped air is V and the original pressure of the trapped air is P. The piston is pushed to the left. The temperature of the gas does not change. before piston is pushed in after piston is pushed in piston cylinder 25 50 25 50 trapped air trapped air What is the new volume and what is the new pressure of the trapped air? new volume new pressure A 2V P 2 B 2V 2P C V P 2 2 D V 2P 2
Topic 5 – Pressure Page | 2 IGCSE Physics 0625 Paper 2 Pastpapers-2020 www.HakimAbbas.site 3 3The diagram shows three vases each with the same base area. Each vase contains water of the same depth. water water water P Q R Which statement about the water pressures at points P, Q and R is correct? A The pressure at point P is the greatest. B The pressure at point Q is the least. C The pressure at point R is the greatest. D The pressures at points P, Q and R are the same. 4 4The diagram shows a simple mercury barometer. The atmospheric pressure increases. Which distance increases? A VW B WY C XY D XZ
Topic 5 – Pressure Page | 3 IGCSE Physics 0625 Paper 2 Pastpapers-2020 www.HakimAbbas.site 5 5 The diagram shows a manometer containing a liquid. The manometer is used to find the difference between the pressure of a gas and atmospheric pressure. Which distance represents this pressure difference? gas pressur e A C D B liquid 6 6Four physics teachers investigate pressure. They wear identical clothes and lie on different beds of nails. The table gives the weight of each teacher and the total area of contact between the teacher and the nails. Which teacher experiences the least pressure from the nails? weight of total area of teacher / N contact / cm2 A 700 13 B 800 20 C 900 14 D 1000 21 7 7A man stands on the ground. Which action will increase the pressure that the man exerts on the ground? A The man slowly bends his knees. B The man slowly lies down on the ground. C The man slowly raises his arms. D The man slowly raises one foot off the ground.

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