Heat Transfer — Set 2
Physics · ऊष्मा स्थानांतरण · Questions 11–20 of 50
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1
Which gas is commonly used between panes in double-glazed windows to reduce heat transfer?
2
Newton’s law of cooling states that the rate of cooling is proportional to?
3
In a thermos flask, the vacuum space mainly reduces?
4
Which material is a good thermal insulator?
5
Which factor increases the rate of heat conduction through a slab?
6
Heat transfer by radiation depends most strongly on which temperature power for an ideal black body?
7
What is emissivity of an ideal black body?
8
A radiator painted black is more effective mainly because black surfaces are better?
9
Why are cooking utensils often made with metal bottoms?
10
Which arrangement reduces heat loss from a hot object in air the most?