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Sunday, 16 August 2026
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Physics Past Questions and Answers

Topic: Pressure

Jamb Physics Questions - Pressure

Question 1:
mercury is a better barometric fluid than water because i. it needs no colouring ii. its density is many times greater than that of water iii. it does not wet glass iv. it has a high vapour pressure v. it has a high boiling point. which of the above statements are true?
  • A I and ii only
  • B I, ii and iii only
  • C Iii and iv only
  • D Iv and v only
  • E Iii, iv and v only
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Question 2:
Which of the following statements is correct? The reading of pressure on a mercury barometer is independent of
  • A The cross-sectional area of the tube
  • B The atmospheric pressure
  • C The density of mercury
  • D The temperature of mercury
  • E The acceleration due to gravity
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Question 3:
An air column 10cm in length is trapped into the sea end of a capillary tube by a 15cm column of mercury with the tube held vertically as shown above. On inverting the tube the air column becomes 15cm long. The atmospheric pressure during the experiment is
  • A 90cm
  • B 76cm
  • C 75cm
  • D 60cm
  • E 50cm
View Answer & Explanation
Question 4:
The principle of transmissibility of pressure in a fluid at rest in all directions is known as
  • A Archimede's principle
  • B Flotation Principle
  • C Newton's lwa
  • D Pascal's law
  • E Boyle's law
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Question 5:
The hatch door of a submarine has an area of 0.5m2. The specific gravity of sea water is 1.03. Assume that g = 10ms-1,and neglect the atmospheric pressure. The force exerted by the sea water on the hatch door at a depth of 200m is
  • A 1.03 x 10<sup style='font-size: smaller;'>5</sup>N
  • B 1.03 x 10<sup style='font-size: smaller;'>4</sup>Nm<sup style='font-size: smaller;'>-2</sup>
  • C 1.06 x 10<sup style='font-size: smaller;'>5</sup>Nm<sup style='font-size: smaller;'>-2</sup>
  • D 2.06 x 10<sup style='font-size: smaller;'>6</sup>N
  • E 1.03 x 10<sup style='font-size: smaller;'>3</sup>N
View Answer & Explanation