Question

Heat energy lost by a hot body is equal to heat energy gained by the cold body. Which of the following option/options below is/are associated with the above statement?

• A. Law of gravitation
• B. Law of conservation of energy
• C. $m_1{c}_1\Delta T_1$ = $m_2{c}_2\Delta T_2$
• D. None of these

Answer 1

Answer: (B), (C)

The correct options are
B

Law of conservation of energy

C

$m_1{c}_1\Delta T_1$ = $m_2{c}_2\Delta T_2$

For an ideal situation, heat energy lost by the hot body is equal to heat energy gained by the cold body. We know that heat flows from a hot body to a cold body. The amount of heat lost by the hot body must be equal to the amount of heat gained by the cold body. As heat is energy in transit, this principle is just conservation of energy.