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Sunday, 16 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 36:
The electromotive force obtained from a simple dynamo may be increased by
  • A Increasing the cross-sectional area of the coil
  • B Winding the coil on a soft-iron armature so as to decrease the magnetic flux through the coil
  • C Increasing the speed of rotation
  • D Making the field magnet longer
  • E Using low-resistance copper coils
View Answer & Explanation
Question 37:
Which of the following is NOT a force?
  • A Friction
  • B Tension
  • C Upthrust
  • D Weight
  • E Impulse
View Answer & Explanation
Question 38:
A 0.05kg bullet travelling at 500ms-1 horizontally strikes a thick vertical wall. It stops after penetrating through the wall horizontal distance of 0.25m. What is the magnitude of the average force the wall exerts on the bullet?
  • A 25N
  • B 50N
  • C 250N
  • D 500N
  • E 25 000N
View Answer & Explanation
Question 39:
A force of 100N stretches an elastic string to a total length of 20cm. If an additional force of 100N stretches the string 5cm further, Find the natural length of the string
  • A 15cm
  • B 12cm
  • C 10cm
  • D 8cm
  • E 5cm
View Answer & Explanation
Question 40:
A quantity of gas occupies a certain volume when the temperature is -73oC and the pressure is 1.5 atmospheres. If the pressure is increased to 4.5 atmospheres and the volume is halved at the same time, what will be the new temperature of the gas?
  • A 573<sup style='font-size: smaller;'>o</sup>C
  • B 327<sup style='font-size: smaller;'>o</sup>C
  • C 300<sup style='font-size: smaller;'>o</sup>C
  • D 110<sup style='font-size: smaller;'>o</sup>C
  • E 27<sup style='font-size: smaller;'>o</sup>C
View Answer & Explanation