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Winds and Pressure Difference

A strip of pa...

Question

A strip of paper is held between thumb and finger. If we blow over the paper, what will happen to the paper strip ?

A

The paper strip will be lifted up

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B

The paper strip will bend down

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C

The paper strip will oscillate up and down alternately

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D

None of the above

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Solution

The correct option is B The paper strip will be lifted up
The still air below the paper had greater pressure than the moving air above the paper resulting in paper getting pushed up.

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