Heat Transfer - Conduction and Convection: Practice Problem & Solution

Solution Explained:

To solve this problem, we apply the core principles of Heat Transfer - Conduction and Convection. Understanding the underlying formula is key to arriving at the correct answer below:

Assertion (A) is true; heat loss from a hot bar to running water is a classic example of forced convection. Reason (R) correctly defines convection as heat transfer by bulk fluid movement due to temperature differences. Thus, both are true and (R) correctly explains (A).