Question

pls tell the ans fast pls helpthis

Answer 1

in first picture we can see that there is a hole in the bottle we can see the balloon is put there to stop the flow of water but it was not put there to stop the flow of water it was there because we want to stop the flow of air because their makes pressure on water to flow it in picture to we can see that there is a bottle which have many holes and the water is continuously falling from it because air makes pressure from its top in picture three we can see that there is also the same condition the water is falling from the jar because of air pressure in picture number 4 we can see that there is water consisting in a glass pipe and the balloon is is noted under the pipe so that they can stop the flow of air