Question

The two blocks shown below have the same temperature, same mass and same composition painted in different textures. Choose the correct statement(s).​​
Statement 1: Both blocks have the same amount of heat.​​
Statement 2: When connected, no heat flows between the two blocks.​

• A. Both the statements are incorrect.​
• B. Statement 1 is incorrect and statement 2 is correct.​
• C. Statement 1 is correct and statement 2 is incorrect.​
• D. Both the statements are correct.​

Answer 1

The correct option is D Both the statements are correct.​

• The heat energy contained in a body depends on its mass, change in temperature and its specific heat capacity.
• Since the two materials are of the same composition i.e., made up of the same material, their specific heat capacity will be equal.
• Also they have the same mass and are raised to the same temperature.
• Therefore both blocks have the same amount of heat and hence statement 1 is correct.
• Heat energy flows from one body to the other due to the difference in their temperatures.
• Here, the two blocks are said to have the same temperature and hence there will be no heat transfer taking place between them if they are brought in contact.
• Therefore statement 2 is also correct.