Get premium membership and access revision papers with marking schemes, video lessons and live classes.

Processing. Please wait.

A student holds a sheet of paper at one end so that it hangs in the position A as shown in the figure below. Explain why the paper rises to the position B when the student blows air in the direction shown by the arrow.

Answer Text:
The velocity of the air above the paper increases creating a region of low pressure compared to atmospheric pressure below the paper.