Question

In houses, the ceiling and the walls are covered with a layer of glass wool to prevent

• A. Conduction
• B. Convection
• C. Radiation
• D. All

Answer 1

Answer: (B)

Convection

For heat insulation in a house, it is very important to prevent the heat loss by convection and conduction.to prevent loss of heat by convection ,even the small opening in the window frame is closed by the weather stripping. To prevent loss of heat by conduction, the ceiling and the wall are covered with player of glass wool.(layers of glass wool are placed in between the plaster and ceiling or the outer walls of the house).