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Physics
A cooling curve is plotted between the temperature of a hot body and time. Which of the following is not true for the cooling curve?
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Q. A cooling curve is plotted between the temperature of a hot body and time. Which of the following is not true for the cooling curve?
NTA Abhyas
NTA Abhyas 2020
A
Cooling is faster from a calorimeter having a larger surface area than a smaller one.
0%
B
Cooling is faster from a calorimeter painted black from outside than that from a polished surfaced calorimeter.
100%
C
Cooling is faster from a copper calorimeter than from a steel calorimeter.
0%
D
The rate of cooling remains same throughout the experiment. Hence the graph is a straight line.
0%
Solution:
The rate of cooling is faster at the beginning and then decreases and becomes constant.