Two models of a windowpane are made. In one model, two identical glass panes of thickness 3 mm are separated with an air gap of 3 mm. This composite system is fixed in the window of a room. The other model consists of a single glass pane of thickness 6 mm, the temperature difference being the same as for the first model. The ratio of the heat flow for the double pane to that for the single pane is
Text Solution
Verified by ExpertsThe correct answer is:
D
R eq = 2 R g + R air = 
+ 
R = 
= 
= 
= 
= 
= 
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