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Thursday, 29 October 2026
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Physics Past Questions and Answers

Jamb 1992 Physics Questions

Question 6:
A man weight 800N climbs up a stairs to height of 15m in 12.5s. What is the man''s average power output?
  • A 667W
  • B 810W
  • C 960W
  • D 15000W
View Answer & Explanation
Question 7:
A machine requires 1000J of work to raise a load of 500N through a vertical distance of 1.5m. Calculate the efficiency of the
  • A 80%
  • B 75%
  • C 50%
  • D 33%
View Answer & Explanation
Question 8:
In an experiment to determine Young's Modulus for a wire, several loads are attached to the wire and the corresponding extension measured. The tensile stress in each case depends on the
  • A Load and the extension
  • B Load and the radius of the wire
  • C Radius of the wire and the extension
  • D Extension and the original length of the wire
View Answer & Explanation
Question 9:
If a plastic sphere floats in water (density = 1000kgm3) with 0.5 of its volume submerged, and floats in oil with 0.4 of its volume submerged the density of the oil is
  • A 800kgm<sup style='font-size: smaller;'>3</sup>
  • B 1200kgm<sup style='font-size: smaller;'>3</sup>
  • C 1250kgm<sup style='font-size: smaller;'>3</sup>
  • D 2000kgm<sup style='font-size: smaller;'>3</sup>
View Answer & Explanation
Question 10:
A platinum resistance thermometer wire has a resistance of 5 ohms at 0oC and 5.5 ohms at 100oC. Calculate the temperature of the wire when the resistance is 5.2 ohms
  • A 80<sup style='font-size: smaller;'>o</sup>C
  • B 60<sup style='font-size: smaller;'>o</sup>C
  • C 40<sup style='font-size: smaller;'>o</sup>C
  • D 10<sup style='font-size: smaller;'>o</sup>C
View Answer & Explanation