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Sunday, 16 August 2026
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Physics Past Questions and Answers

Topic: Charles' law

Jamb Physics Questions - Charles' law

Question 6:
The equation PxVyTz = constant in charles' law when
  • A X = 1, y = -1, z = 1
  • B X = 0, y = 1, z = -1
  • C X = 1, y = 0, z = -1
  • D X = 0, y = 1, z = 1
View Answer & Explanation
Question 7:
A lead bullet of mass 0.05kg is fired with a velocity of 200ms\(^{-1}\) into a lead block of mass 0.95kg. Given that the lead block can move freely, the final kinetic energy after impact is
  • A 50 J
  • B 100 J
  • C 150 J
  • D 200 J
View Answer & Explanation
Question 8:
In the J-tube above, Y and X are on the same horizontal level and 30cm3 of air is trapped above Y when the atmospheric pressure is 75cm Hg, calculate the volume of air trapped above Y when 15cm Hg is now poured into the limb above X
  • A 15 cm<sup style='font-size: smaller;'>3</sup>
  • B 25 cm<sup style='font-size: smaller;'>3</sup>
  • C 35 cm<sup style='font-size: smaller;'>3</sup>
  • D 45 cm<sup style='font-size: smaller;'>3</sup>
View Answer & Explanation
Question 9:
A sealed flask contains 600cm3 of air at 27°C and is heated to 35°C at constant pressure. The new volume is?
  • A 508 cm<sup style='font-size: smaller;'>3</sup>
  • B 516 cm<sup style='font-size: smaller;'>3</sup>
  • C 608 cm<sup style='font-size: smaller;'>3</sup>
  • D 616 cm<sup style='font-size: smaller;'>3</sup>
View Answer & Explanation
Question 10:
THe velocity of sound in air at 16oC is 340ms-1. What will it be when the pressure is doubled and its temperature raised to 127oC?
  • A 400 ms<sup style='font-size: smaller;'>-1</sup>
  • B 4,000 ms<sup style='font-size: smaller;'>-1</sup>
  • C 8,000 ms<sup style='font-size: smaller;'>-1</sup>
  • D 160,000 ms<sup style='font-size: smaller;'>-1</sup>
View Answer & Explanation