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Friday, 22 May 2026
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Physics Past Questions and Answers

Jamb 1998 Physics Questions

Question 16:
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
Question 17:
A platinum resistance thermometer records 3.0\(\Omega\) at 0oC and 8.0\(\Omega\) at 100oC. If it records 6.0\(\Omega\) in a certain environment, The temperature of the medium is
  • A 80<sup style='font-size: smaller;'>o</sup>C
  • B 60<sup style='font-size: smaller;'>o</sup>C
  • C 50<sup style='font-size: smaller;'>o</sup>C
  • D 30<sup style='font-size: smaller;'>o</sup>C
View Answer & Explanation
Question 18:
The linear expansivity of brass is 2 x 10-5C-1. If the volume of a piece of brass is 15.00cm3 at 00C, What is the volume at 100oC?
  • A 16.03cm<sup style='font-size: smaller;'>3</sup>
  • B 16.00cm<sup style='font-size: smaller;'>3</sup>
  • C 15.09cm<sup style='font-size: smaller;'>3</sup>
  • D 15cm<sup style='font-size: smaller;'>3</sup>
View Answer & Explanation
Question 19:
A gas has a volume of 100cm3 at 27oC. If it is heated to temperature T until a final volume of 120cm3 is attained, calculate T
  • A 33<sup style='font-size: smaller;'>o</sup>C
  • B 60<sup style='font-size: smaller;'>o</sup>C
  • C 87<sup style='font-size: smaller;'>o</sup>C
  • D 114<sup style='font-size: smaller;'>o</sup>C
View Answer & Explanation
Question 20:
A 500W heater is used to heat 0.6kg of water from 25oC to 100oC in t2 seconds. If another 1000W heater is used to heat 0.2kg of water from 10oC to 100oC in t, seconds, find \(\frac {t_1}{t_2}\)
  • A 50
  • B 5
  • C 5/4
  • D 1/5
View Answer & Explanation