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Monday, 17 August 2026
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Physics Past Questions and Answers

Topic: Quantity of Heat

Jamb Physics Questions - Quantity of Heat

Question 36:
A block of aluminum is heated electrically by a 30 w heater if the temperature rises by 10°c in 5 minutes, the heat capacity of the aluminum is
  • A 900 JK<sup style='font-size: smaller;'>-1</sup>
  • B 90 JK<sup style='font-size: smaller;'>-1</sup>
  • C 100 JK<sup style='font-size: smaller;'>-1</sup>
  • D 200 JK<sup style='font-size: smaller;'>-1</sup>
View Answer & Explanation
Question 37:
A piece of substance of specific head capacity 450JKg-1K-1 falls through a vertical distance of 20m from rest. Calculate the rise in temperature of the substance on hitting the ground when all its energies are converted into heat. [g = 10ms-2]
  • A 2/9°C
  • B 4/9°C
  • C 9/4°C
  • D 9/2°C
View Answer & Explanation
Question 38:
A metal of mass 0.5kg is heated to 100°C and then transferred to a well-lagged calorimeter of heat capacity 80JK-1 containing water of heat capacity 420JK-1 at 15°C. If the final steady temperature of the mixture is 25°C, find the specific heat capacity of the metal.
  • A 877Jkg<sup style='font-size: smaller;'>-1</sup>K<sup style='font-size: smaller;'>-1</sup>
  • B 286Jkg<sup style='font-size: smaller;'>-1</sup>K<sup style='font-size: smaller;'>-1</sup>
  • C 133Jkg<sup style='font-size: smaller;'>-1</sup>K<sup style='font-size: smaller;'>-1</sup>
  • D 92Jkg<sup style='font-size: smaller;'>-1</sup>K<sup style='font-size: smaller;'>-1</sup>
View Answer & Explanation
Question 39:
Two liquids X and Y having the same mass are supplied with the same quantity of heat. If the temperature rise in X is twice that of Y, the ratio of specific heat capacity of X to that of Y is
  • A 2:1
  • B 1:2
  • C 4:1
  • D 1:4
View Answer & Explanation
Question 40:
The quantity of heat needed to raise the temperature of a body by 1K is the body's
  • A Heat capacity
  • B Internal energy
  • C Specific heat capacity
  • D Latent heat of fusion
View Answer & Explanation