Question

What will happen when we hold 10cm long strip of paper near lower lip of mouth with fingers and blow air

Answer 1

Explanation:

Good Question

for this we need a strip paper.

hold it with fingers near lower lip and when we blow air the paper will also start flying in the same direction.

This is because of the pressure.

when we blow air , the air of the area moves and pressure decreases , and we know that air runs from high pressure to low pressure .

now the air of lower part which is of high pressure goes upwards and make the paper fly .

so , this is how it works , and the final result is the flying of paper in the same direction of the air blown from mouth.