JEE Main 2002 Physics question

If mass-energy equivalence is taken into account, when water is cooled to form ice, the mass of water should

(1)increase
(2)remain unchanged
(3)decreaseCorrect
(4)first increase then decrease

Answer: (3)

Solution

When water freezes into ice, energy (the latent heat of fusion) is released by the system. By mass–energy equivalence , a decrease in the internal energy of the system corresponds to a decrease in its mass

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Question ID VK-037908