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Friday, 01 May 2026
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Physics Past Questions and Answers

Jamb Physics Questions

Question 446:
The length of a side of a metallic cube at 20oC is 5.0cm. Given that the linear expansivity of the metal is 4.0 x 10-5k-1, find the volume of the cube at 120oC .
  • A 126.50cm<sup style='font-size: smaller;'>3</sup>
  • B 126.25cm<sup style='font-size: smaller;'>3</sup>
  • C 126.00cm<sup style='font-size: smaller;'>3</sup>
  • D 125.00cm<sup style='font-size: smaller;'>3</sup>
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Question 447:
As a result of air at the top of a barometer, the height of the mercury column is 73.5cm when it should be 75.0cm; the volume of the space above the mercury is 8.0cm3. Calculate the correct barometer height when the barometer reads 74.0cm and the volume of the space above the mercury is 6.0cm3.
  • A 72.0cm
  • B 74.5cm
  • C 75.1cm
  • D 76.0cm
View Answer & Explanation
Question 448:
Hot water is added to three times its mass of water at 10oC and the resultant temperature is 20oC. What is the initial temperature of the hot water?
  • A 100<sup style='font-size: smaller;'>o</sup>C
  • B 80<sup style='font-size: smaller;'>o</sup>C
  • C 50<sup style='font-size: smaller;'>o</sup>C
  • D 40<sup style='font-size: smaller;'>o</sup>C
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Question 449:
22,000J of heat is required to raise the temperature of 1.5kg of paraffin from 20oC to 30oC. Calculate the specific heat capacity of paraffin.
  • A 1466Jkg<sup style='font-size: smaller;'>-1</sup><sup style='font-size: smaller;'>o</sup>C<sup style='font-size: smaller;'>-1</sup>
  • B 2933Jkg<sup style='font-size: smaller;'>-1</sup><sup style='font-size: smaller;'>o</sup>C<sup style='font-size: smaller;'>-1</sup>
  • C 4400Jkg<sup style='font-size: smaller;'>-1</sup><sup style='font-size: smaller;'>o</sup>C<sup style='font-size: smaller;'>-1</sup>
  • D 5866Jkg<sup style='font-size: smaller;'>-1</sup><sup style='font-size: smaller;'>o</sup>C<sup style='font-size: smaller;'>-1</sup>
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Question 450:
In which of the following are the substance arranged in descending order of their thermal conductivities?
  • A Copper, steel, glass
  • B Steel, copper, glass
  • C Steel, glass, copper
  • D Copper, glass, steel
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