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Tuesday, 27 October 2026
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Physics Past Questions and Answers

Jamb 1998 Physics Questions

Question 11:
In a wheel and axle mechanism the diameters of the wheel and axle are 40cm and 8cm respectively. Given that the machine is 80% efficient, what effort is required to lift a load of 100N?
  • A 20N
  • B 25N
  • C 50N
  • D 80N
View Answer & Explanation
Question 12:
The tendon in a man's leg is 0.01m long. If a force of 5N stretches the tendon by 2.0 x 10-5m, calculate the strain on the muscle.
  • A 5 x 10<sup style='font-size: smaller;'>6</sup>
  • B 5 x 10<sup style='font-size: smaller;'>2</sup>
  • C 2 x 10<sup style='font-size: smaller;'>-3</sup>
  • D 2 x 10<sup style='font-size: smaller;'>-7</sup>
View Answer & Explanation
Question 13:
Which of these statements are correct for the pressures in liquids? i. pressure in a liquid at a point acts equally in all directions. ii. pressure increases with depth. iii. pressure at a depth depends on the shape of the container. iv. pressure at the same depth in different liquids are proportional to the density at different liquids.
  • A I, ii, iii only
  • B I, ii, iv only
  • C I, iii, iv only
  • D Ii, iii, iv only
View Answer & Explanation
Question 14:
The atmospheric pressure due to water is 1.3 x 106Nm-2. What is the total pressure at the bottom of an ocean 10m deep? [Density of water = 1000kgm-3, g = 10ms-2]
  • A 1.3 x 10<sup style='font-size: smaller;'>7</sup>Nm<sup style='font-size: smaller;'>-2</sup>
  • B 1.4 x 10<sup style='font-size: smaller;'>6</sup>Nm<sup style='font-size: smaller;'>-2</sup>
  • C 1.4 x 10<sup style='font-size: smaller;'>5</sup>Nm<sup style='font-size: smaller;'>-2</sup>
  • D 1.0 x 10 <sup style='font-size: smaller;'>5</sup>Nm<sup style='font-size: smaller;'>-2</sup>
View Answer & Explanation
Question 15:
A solid of weight 0.600N is totally immersed in oil and water respectively. If the upthrust of oil is 0.210N and the relative density of oil is 0.875. Find the upthrust in water.
  • A 0.600N
  • B 0.360N
  • C 0.240N
  • D 0.180N
View Answer & Explanation