Question

The characteristics of two methods of heat transfer are listed below: Method A: No material medium is required and heat is transferred in all directions Method B: Material medium like gas or liquid is required and heat is transferred only in the vertically upward direction Which statement is correct? Method A is radiation and Method B is conduction. Method A is radiation and Method B is convection. Method A is conduction and Method B is radiation. Method A is convection and Method B is radiation.

Answer 1

Answer:

• Method A is radiation and Method B is convection.

Explanation:

Radiation:

• The radiations are basically electromagnetic radiation that does not required any medium to travel. They can travel not through  air and solid material but can travel through  vacuum.

Convection:

• The convection is method of transfer of heat through liquid or gaseous medium.

Summary:

• As in method one, there is no medium, so radiation can pass without medium

• As in method two, there is liquid or gases medium, so heat travel through this medium will be convection.

Answer 2

Answer:

Method A is radiation and Method B is convection.