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Tuesday, 18 August 2026
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Physics Past Questions and Answers

Topic: Structure of Matter and Kinetic Theory

Jamb Physics Questions - Structure of Matter and Kinetic Theory

Question 66:
The kinetic theory of photoelectron liberated from a metallic surface depends on the
  • A Intensity of the incident radiation
  • B Time duration of the incident radiation
  • C Temperature of the incident radiation
  • D Frequency of the incident radiation
View Answer & Explanation
Question 67:
If a solid X floats in liquids P of relative density 2.0 and in liquid Q of relative density 1.5, it can be inferred that the
  • A Weight of P displaced is greater than that of Q
  • B Weight of P displaced is less than that of Q
  • C Volume of P displaced is greater than that of Q
  • D Volume of P displaced is less than that of Q
View Answer & Explanation
Question 68:
A Motor Tyre is inflated to pressure of 2.0 x 105Nm-2 when the temperature of air is 27oC. What will be the pressure in it at 87oC assuming that the volume of the Tyre does not change?
  • A 2.6 x 10<sup style='font-size: smaller;'>5</sup>Nm<sup style='font-size: smaller;'>-2</sup>
  • B 2.4 x 10<sup style='font-size: smaller;'>5</sup>Nm<sup style='font-size: smaller;'>-2</sup>
  • C 2.2 x 10<sup style='font-size: smaller;'>5</sup>Nm<sup style='font-size: smaller;'>-2</sup>
  • D 1.3 x 10<sup style='font-size: smaller;'>5</sup>Nm<sup style='font-size: smaller;'>-2</sup>
View Answer & Explanation
Question 69:
A certain radioisotope of \(^{235}_{92}U\) emits four alpha particles and three beta particles. The mass number and the atomic number of the resulting elements respectively are
  • A 219 and 87
  • B 84 and 223
  • C 223 and 87
  • D 219 and 81
View Answer & Explanation
Question 70:
The energy contained in a wire when it extended by 0.02m by a force 500 N is
  • A 5J
  • B 10J
  • C 10<sup style='font-size: smaller;'>3</sup>J
  • D 10<sup style='font-size: smaller;'>4</sup>
View Answer & Explanation