Quantity of Heat - Jamb Physics Past Questions and Answers

Question 36:

• JAMB 2017

When two objects P and Q are supplied with the same quantity of heat, the temperature change in P is observed to be twice that of Q. The mass of P is half that of Q. The ratio of the specific heat capacity pf P to Q is

A. 1:4
B. 4:1
C. 1:1
D. 2:1

Question 37:

• JAMB 2018

The amount of heat needed to raise the temperature of 10kg of Copper by 1K is its

A. Specific heat capacity
B. Latent heat
C. Heat capacity
D. Internal energy

Question 38:

• JAMB 2018

An electric heating coil rated at 1Kw is used to heat 2kg of water for 2 minutes. The initial water temperature is 30\(^o\)C. Taking the specific heat of the water as 4,000Jkg \(^{-1}\) and neglecting that of the container, the final water temperature is

A. 15.0\(^o\)C
B. 45.0\(^o\)C
C. 52.5\(^o\)C
D. 60.0\(^o\)C

Question 39:

• JAMB 2019

When two objects A and B are supplied with the same quantity of heat, the temperature change in A is obtained to be twice that of B. The mass of P is half that of Q. The ratio of the specific heat capacity of A to B is

A. 1 : 4
B. 4 : 1
C. 1 : 1
D. 2 : 1

Question 40:

• JAMB 2020

Heat is supplied uniformly at the rate of 100W to 1.0 x 10\(^{-2}\)kg of a liquid for 20 seconds. If the temperature of the liquid rises by 5\(^o\)C, then the specific heat capacity of the liquid is

A. 2.0 x 10\(^2\)Jkg\(^-1\)K\(^-1\)
B. 2.0 x 10\(^2\)Jkg\(^-1\)
C. 4.0 x 10\(^4\)Jkg\(^-1\)K\(^-1\)
D. 4.0 x 10\(^4\)Jkg\(^-1\)