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Sunday, 16 August 2026
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Physics Past Questions and Answers

Topic: Pressure exerted by gas

Jamb Physics Questions - Pressure exerted by gas

Question 16:
The pressure of a given mass of a gas changes from 200Nm-2 to 120Nm-2 while the temperature drops from 127°C to -73°C. The ratio of the final volume to the initial volume is
  • A 2 : 5
  • B 5 : 4
  • C 5 : 2
  • D 4 : 5
View Answer & Explanation
Question 17:
the pressure of 3 moles of an ideal gas at a temperature of 27°C having a volume of 10-3m3 is
  • A 2.49 x 10<sup style='font-size: smaller;'>5</sup>Nm<sup style='font-size: smaller;'>-2</sup>
  • B 7.47 x 10<sup style='font-size: smaller;'>5</sup>Nm<sup style='font-size: smaller;'>-2</sup>
  • C 2.49 x 10<sup style='font-size: smaller;'>6</sup>Nm<sup style='font-size: smaller;'>-2</sup>
  • D 7.47 x 10<sup style='font-size: smaller;'>6</sup>Nm<sup style='font-size: smaller;'>-2</sup>
View Answer & Explanation
Question 18:
A hose of cross-sectional area 0.5m2 is used to discharge water from a water tanker at a velocity of 60ms-1 in 20s into a container. If the container is filled completely, the volume of the container is
  • A 240m<sup style='font-size: smaller;'>3</sup>
  • B 600m <sup style='font-size: smaller;'>3</sup>
  • C 2400m <sup style='font-size: smaller;'>3</sup>
  • D 6000m<sup style='font-size: smaller;'>3</sup>
View Answer & Explanation
Question 19:
The stylus of a phonograph record exerts a force of 7.7 x 10-2N on a groove of radius 10-5m. Compute the pressure exerted by the stylus on the groove
  • A 2.45 x 10<sup style='font-size: smaller;'>8</sup> Nm<sup style='font-size: smaller;'>-2</sup>
  • B 3.45 x 10<sup style='font-size: smaller;'>8</sup> Nm<sup style='font-size: smaller;'>-2</sup>
  • C 4.90 x 10<sup style='font-size: smaller;'>8</sup> Nm<sup style='font-size: smaller;'>-2</sup>
  • D 2.42 x 10<sup style='font-size: smaller;'>8</sup> Nm<sup style='font-size: smaller;'>-2</sup>
View Answer & Explanation
Question 20:
In a gas experiment, if the volume of the gas is plotted against the reciprocal of the pressure, the unit of the slope of the resulting curve is
  • A Force
  • B Temperature
  • C Power
  • D Work
View Answer & Explanation