Question

A student boils water in a pan, on an electric stove. Three incidents thus, occur.1. The top of electric stove remains cold, yet heat reaches the pan 2. Water in the pan is boiled and produces steam 3. The handle of the pan becomes hot and requires a mitten to lift it. Which three processes do the three steps represent, in terms of heat transfer? *

1: Radiation, 2: Conduction and 3: Convection
1: Convection, 2: Radiation and 3: Conduction
1: Radiation, 2: Convection and 3: Conduction
1: Convection, 2: Conduction and 3: Radiation​

Answer 1

Answer: radiation, convection and conduction

Explanation: when heat reaches the pan thus radiation takes place then liquid in the pan starts boiling convection takes place the heat transfer take place that is known as conduction

Answer 2

1: Radiation, 2: Convection and 3: Conduction is the correct sequence of three steps.

1. Mentioned processes are the methods of heat transfer. Radiation is responsible for heat transfer from source to the pan. The transfer takes place through electromagnetic waves.
2. Further, heat transfer in liquid takes place through convection. This takes place through movement of molecules in fluids.
3. Conduction transfers the heat in solid materials and hence is responsible for heating of handle.