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Question

Which of these is the reason why the thatched roofs of huts are blown off during high winds?


A
High speed winds increase the pressure above the roof
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B
High speed winds decreases the pressure above the roof
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C
High speed winds makes the pressure difference zero between the above and below of the roof
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D
None of these
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Solution

The correct option is B High speed winds decreases the pressure above the roof

High-speed winds reduce the air pressure above the roof. The air pressure below the roof is high. This pushes the roof upwards. That's why roofs of the huts are blown off during high-speed winds.


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