Question

why does the water enter into the syringe when the plunger is pulled

Answer 1

this is due to atmospheric pressure.when pull the syringe,the iterparticles of air demands to fill the vacant space.hpe u undetstood

Answer 2

Hey Friend,

When the plunger of a syringe is pulled, it creates a vaccum in the tube of the syringe and thus a low pressure is created. The outside pressure being high, forces the water to enter the syringe (from high pressure area to low pressure area). And so, the syringe is filled with water.

So the main factor is PRESSURE, which is responsible for the water flow in and out of the syringe

Hope it helps!