Nailing Challenging Secondary School Physics
By: Rajiv Misra
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Topic: Heat
Key Words: Conduction, radiation.
Answer: The material is wood and the colour is white. Wood is a poor conductor of heat. This reduces heat loss from the house through conduction. White colour is a poor emitter of infrared radiation. This reduces heat loss through radiation.
Tip: Heat transfer through conduction depends on the material. Heat transfer through radiation depends on surface area, temperature of the substance, the colour and texture of material.
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Posted on 13/04/2017
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