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Thursday, 29 October 2026
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Physics Past Questions and Answers

Jamb 1993 Physics Questions

Question 1:
Which of the following quantities has the same unit as the watt?
  • A Force x time
  • B Force x distance
  • C Force x acceleration
  • D Force x velocity
View Answer & Explanation
Question 2:
The external and internal diameter of a tube are measured as (32 ± 2)mm and (21 ± 1)mm respectively. Determine the percentage error in the thickness of the tube.
  • A 27%
  • B 14%
  • C 9%
  • D 3%
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Question 3:
Two forces of magnitudes 7N and 3N act at right angles to each other. The angle \(\theta\) between the resultant and the 7N force is given by
  • A Cos\(\theta\) = \(\frac{3}{7}\)
  • B Sin\(\theta\) = \(\frac{3}{7}\)
  • C Tan\(\theta\) = \(\frac{3}{7}\)
  • D Cot\(\theta\) = \(\frac{3}{7}\)
View Answer & Explanation
Question 4:
A rocket burns fuel at the rate of 10kgs-1 and ejects it with velocity of 5 x 103ms-1. The thrust exerted by the gas on the rock is
  • A 2.5 x 10<sup style='font-size: smaller;'>7</sup>N
  • B 5.0 x 10<sup style='font-size: smaller;'>4</sup>N
  • C 5.0 x 10<sup style='font-size: smaller;'>2</sup>N
  • D 2.0 x 10<sup style='font-size: smaller;'>-3</sup>N
View Answer & Explanation
Question 5:
The force experienced by an object of mass 60.0kg in the moon's gravitational field is 1.002 x 102N. What is the intensity of the gravitational field?
  • A 0.60Nkg<sup style='font-size: smaller;'>-1</sup>
  • B 1.67Nkg<sup style='font-size: smaller;'>-1</sup>
  • C 6.12 x 10<sup style='font-size: smaller;'>2</sup>Nkg<sup style='font-size: smaller;'>-1</sup>
  • D 9.81ms<sup style='font-size: smaller;'>-2</sup>
View Answer & Explanation