The amount of heat needed to raise the temperature of 10kg of…
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
Please note the difference between heat capacity and specific heat capacity.
While heat capacity is the amount of heat energy required to change the temperature of any amount of a substance by 1 kelvin, specific heat capacity on the other hand is the amount of heat energy required to change the temperature of 1 kilogram of a substance by 1 kelvin.
In this question, 10kg and not 1kg of copper is involved, so, the heat capacity is not specific.
Now for the right answer to the above question:
- Option A is incorrect. 1kg of copper would have made the heat capacity specific.
- Option B is incorrect. latent heat involves the heat required to change state.
- C is correct. heat capacity is the right answer.
- D is not the correct answer. The concept of internal energy is not within the scope of the subject matter.
You may please note these/this:
- 1 kilogram of copper would have been esteemed as specific, but 10 kilograms or any other number (apart from one), is not specific.
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/culled from 2018 JAMB-UTME physics question 12 /