Class 10 FRANK Solutions Physics Chapter 5.1 - Calorimetry
Refer to TopperLearning’s Frank Solutions for ICSE Class 10 Physics Chapter Calorimetry for accurate textbook solutions. Understand what is thermal energy. Go through the differences between temperature and heat. Find out about the scale of temperature that is used commonly.
Also, learn to express the temperature in the Fahrenheit scale and the Celsius scale with the assistance of our ICSE Class 10 Physics textbook solutions. To prepare for your Physics prelim and board exams, you can also glimpse through our concept videos, previous years’ question papers and sample question papers.
Calorimetry Exercise 233
The SI unit of heat energy is joule (J).
1 J = 4.2 cal. So, 1 joule is bigger than 1 calorie.
i. Celsius scale
ii. Fahrenheit scale
Upper fixed point = 212oF
Calorimetry Exercise 234
SI unit of:
i. Amount of heat - joule
ii. Heat Capacity - joule per Kelvin
iii. Specific Heat Capacity - joule per kilogram per Kelvin
(i) In cooling - Water is used in the cooling systems of automobiles and other engines.
(ii) As heat reservoir - In cold countries, water is used as a reservoir for wine and juice to avoid their freezing. The reason is that water can provide more heat to the bottles due to its high specific heat capacity. Hence, they do not cool down further to freeze.
It is made of copper because:
i. Copper is a good conductor of heat so it attains the temperature of its contents in a very short time.
ii. It has low specific heat (390 Jkg-1K-1). Therefore, it will take only a very little part of the heat energy given out in the experiment.
Heat capacity of a body is the quantity of heat required to raise its temperature by 1oC. It depends upon the mass and the nature of the body.
Units: J/oC or calorie/oC
Specific heat capacity is the amount of heat required to raise the temperature of 1 kg of the substance by 1oC.
Units: j/kgK or calorie/g oC
When a hot body is mixed or kept in contact with a cold body, there is a transfer of heat from hot body to cold body such that
Total heat gained by colder body = Total heat lost by the hot body,
if there is no loss of heat to the surroundings.