Physics Practice Test – Pressure (Solid, Liquid and Gas) Questions with Answers and Explanations

A hydraulic press has a large circular piston of radius 0.8 m and a circular plunger of radius 0.2 m. A force of 500 N is exerted by the plunger. Find the force exerted on the piston. (JAMB 1995)

A 8000 N  B. 4000 N    C. 2000 N    D. 31 N

In a hydraulic press, a force of 40 N is applied on the effort piston of area 0.4 m². If the force exerted on the load piston is 400 N, the area of the load piston is ______ (JAMB 2004)

A. 8 m²   B. 4 m²    C. 2 m²   D. 1 m²

A given barometric altimeter reads zero Pascal _______ (JAMB 2019)

A. in the atmosphere
B. in the sea
C. on land
D. in outer space

If the atmospheric pressure = 76 cmHg, the pressure of the gas in the diagram below is _______ (JAMB 2006)



A. 86 cmHg   B. 66 cmHg   C. 96 cmHg   D. 76 cmHg

In the J—tube above, Y and X are on the same horizontal level and 30 cm³ of air is trapped above Y when the atmospheric pressure is 75cm Hg. Calculate the volume of air trapped above Y when 15 cmHg is now poured into the limb above X. (JAMB 1999)