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प्रश्न
What do you understand by the following statements:
The heat capacity of the body is 60JK-1.
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उत्तर
Heat capacity is the amount of heat required to raise the temperature of a body by 1°C or 1 K. Thus, 60 JK−1 of energy is required to raise the temperature of the given body by 1 K.
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संबंधित प्रश्न
A solid metal weighing 150 g melts at its melting point of 800 °C by providing heat at the rate of 100 W. The time taken for it to completely melt at the same temperature is 4 min. What is the specific latent heat of fusion of the metal?
During the phase change does the average kinetic energy of the molecules of the substance increase?
How much heat energy is released when 5.0 g of water at 20℃ changes into ice at 0℃? Take specific heat capacity of water = 4.2 J g-1 K-1, Specific latent heat of fusion of ice = 336 J g-1.
Without green house effect, the average temperature of earth’s surface would have been:
(a) – 18℃
(b) 33℃
(c) 0℃
(d) 15℃
What is meant by specific heat capacity?
(b) 2000 J of heat energy is required to raise the temperature of 4 kg of a
metal by 3°c. Which expression gives the specific heat capacity of the metal?
Give two reasons as to why copper is preferred over other metals for making calorimeters.
The temperature of a lead piece of mass 400 g rises from 20°C to 50°C when 1560 J of heat is supplied to it. Calculate Specific heat capacity of lead.
An electric immersion heater is rated 1250 W. Calculate the time in which it will heat 20 kg of water at 5°C to 65°C.
Which of the substances P, Q, or R has the lowest specific heat? The temperature v/s time graph is shown ______.
