SC-1443
Radiation
Lower Sec Science · Secondary 2 · Medium · Radiation
A student shines a lamp on a metal can of hot water. The can is painted dull black. Which statement best explains why the water cools down faster than if the can were shiny?
- Dull black surfaces are better emitters of heat radiation than shiny surfaces.
- Dull black surfaces are better conductors of heat than shiny surfaces.
- Dull black surfaces reflect more heat radiation back into the water.
- Dull black surfaces stop convection from happening around the can.
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