By blowing air into a funnel through the narrow end, the filter paper inside the funnel cannot be removed. Why?

By blowing air into a funnel through the narrow end, the filter paper

1.	By blowing air into a funnel through the narrow end, the filter paper inside the funnel cannot be removed. Why?
Answer» SOLUTION :When air is blown downward into the funnel, the VELOCITY of air at the top of the paper BECOMES higher, this produces a lower pressure. Due to this pressure difference the paper GETS pushed upwards sad sticks to the wall of the funnel.