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Sunday, 21 June 2026
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Physics Past Questions and Answers

Topic: using the theory to explain:

Jamb Physics Questions - using the theory to explain:

Question 36:
A gas has a volume of 100cm3 at 27oC. If it is heated to temperature T until a final volume of 120cm3 is attained, calculate T
  • A 33<sup style='font-size: smaller;'>o</sup>C
  • B 60<sup style='font-size: smaller;'>o</sup>C
  • C 87<sup style='font-size: smaller;'>o</sup>C
  • D 114<sup style='font-size: smaller;'>o</sup>C
View Answer & Explanation
Question 37:
One valid assumption of the kinetic theory of gasses is the
  • A The molecules of a gas are constantly in a state of motion and the number of collision remains constant
  • B The number of molecule of gas increases with increasing pressure
  • C As the temperature increases, the number of collision made by the gas molecule remains constant
  • D The molecules of gas are all identical and are very small in size
View Answer & Explanation
Question 38:
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 39:
A gas at a volume of V0 in a container at pressure P0 is compressed to one-fifth of its volume. What will be its pressure if the magnitude of its original temperature T is constant?
  • A P<sub style='font-size: smaller;'>0</sub>/5
  • B 4P<sub style='font-size: smaller;'>0</sub>/5
  • C P<sub style='font-size: smaller;'>0</sub>
  • D 5P<sub style='font-size: smaller;'>0</sub>
View Answer & Explanation
Question 40:
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