Question

Assertion (A): When two bodies P (${100}^{o}C$) and Q (${50}^{o}C$) are brought in contact with each other, heat is transferred from P to Q. Reason (R): Q is hotter than P as heat always flows from the colder body to the hotter body.

• A. Both A and R are true and R is the correct explanation of A.
• B. Both A and R are true, but R is not the correct explanation of A.
• C. A is true, but R is false.
• D. A is false, but R is true.

Answer 1

The correct option is C A is true, but R is false.

When two bodies are brought into contact with each other, heat flows from hotter body to colder body. Here, body P is at higher temperature with respect to body Q. So, body P is hotter than body Q.
Therefore, assertion (A) is true but reason (R) is false.