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Thursday, 21 May 2026
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Physics Past Questions and Answers

Jamb 1998 Physics Questions

Question 1:
A bullet fired at a wooden block of thickness 0.15m manages to penetrate the block. If the mass of the bullet is 0.025kg and the average resisting force of the wood is 7.5 x 103N, calculate the speed of the bullet just before it hits the wooden block.
  • A 450ms<sup style='font-size: smaller;'>-1</sup>
  • B 400ms<sup style='font-size: smaller;'>-1</sup>
  • C 300ms<sup style='font-size: smaller;'>-1</sup>
  • D 250ms<sup style='font-size: smaller;'>-1</sup>
View Answer & Explanation
Question 2:
A bullet fired at a wooden block of thickness 0.15m manages to penetrate the block. If the mass of the bullet is 0.025kg and the average resisting force of the wood is 7.5 x 103N, calculate the speed of the bullet just before it hits the wooden block.
  • A 450ms<sup style='font-size: smaller;'>-1</sup>
  • B 400ms<sup style='font-size: smaller;'>-1</sup>
  • C 300ms<sup style='font-size: smaller;'>-1</sup>
  • D 250ms<sup style='font-size: smaller;'>-1</sup>
View Answer & Explanation
Question 3:
The velocity of a sound wave at 27oC is 360ms-1. Its velocity at 127oC is
  • A 120√3 ms<sup style='font-size: smaller;'>-1</sup>
  • B 240 ms<sup style='font-size: smaller;'>-1</sup>
  • C 240√3 ms<sup style='font-size: smaller;'>-1</sup>
  • D 720√3 ms<sup style='font-size: smaller;'>-1</sup>
View Answer & Explanation
Question 4:
The physical quantity that has the same dimensions as impulse is
  • A Energy
  • B Momentum
  • C Surface tension
  • D Pressure
View Answer & Explanation
Question 5:
A ball is moving at 18ms-1 in a direction inclined at 60o to the horizontal. The horizontal component to its velocity is
  • A 9√3ms<sup style='font-size: smaller;'>-1</sup> ·
  • B 6√3ms<sup style='font-size: smaller;'>-1</sup> ·
  • C 8√3ms<sup style='font-size: smaller;'>-1</sup> ·
  • D 9ms<sup style='font-size: smaller;'>-1</sup> ·
View Answer & Explanation