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Sunday, 16 August 2026
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Physics Past Questions and Answers

Topic: Pressure

Jamb Physics Questions - Pressure

Question 21:
A pilot records the atmospheric pressure outside its plane as 63cm of Hg while a ground observer records a reading of 75cm of Hg for the atmospheric pressure on the ground. Assuming that the density of the atmosphere is constant, calculate the height of the plane above the ground. (Relative density of Hg = 13.0 and that of air = 0.00013)
  • A 1200m
  • B 6300m
  • C 7500m
  • D 13800m
View Answer & Explanation
Question 22:
A man weight 800N climbs up a stairs to height of 15m in 12.5s. What is the man''s average power output?
  • A 667W
  • B 810W
  • C 960W
  • D 15000W
View Answer & Explanation
Question 23:
Which of these statements are TRUE of pressure in liquids? i. pressure acts equally in all direction. ii. pressure decreases with depth. iii. pressure at the same level of a liquid is the same. iv pressure is dependent on the cross-sectional area of the barometer tube
  • A I, iii only
  • B I, ii, iii only
  • C I, iii, and iv only
  • D I, ii, iii and iv
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Question 24:
In the fig above if the atmospheric pressure is 760mm, the pressure of the chamber G is
  • A 660mm
  • B 690mm
  • C 830mm
  • D 860mm
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Question 25:
A hydraulic press has a large circular piston of radius 0.8m and a circular plunger of radius 0.2m. A force of 500N is exerted by the plunger. Find the force exerted on the piston
  • A 8000N
  • B 4000N
  • C 2000N
  • D 31N
View Answer & Explanation