Physics
(a) Atmospheric temperature after a hailstorm is greater than the temperature during the hailstorm. State True or False.
(b) Which thermal physical quantity of a frying pan changes by making its base heavier?
(c) State the principle of Calorimetry.
Calorimetry
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Answer
(a) False
Reason — After the hail-strom, ice starts absorbing the heat energy required for its melting from the surroundings, so the temperature of the surroundings falls further down.
(b) Making the base of a frying pan heavier increases its heat capacity because heat capacity depends on the mass of the object so that a heavier base requires more heat to raise its temperature.
(c) The principle of calorimetry states that when a hot body is brought in contact with a cold body, then heat lost by the hot body is equal to the heat gained by the cold body, provided there is no heat loss in the environment.
Heat energy lost by the hot body = Heat energy gained by the cold body
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