Question

When we press the bulb of a dropper with its nozzle kept in a water,air in the dropper is seen two escape in a form of bubbles. Once we release the pressure on the bulb, water gets filled in the dropper. the rise of water in the dropper. Is due to
A)pressure of water
B) gravity of earth
C)shape of the rubber bulb
D) atmospheric pressure

Any one explain with the correct answer breafly please

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Answer 1

Answer:

D) atmospheric pressure

when bulb is released the air rushes inside the dropper with water due to atmospheric pressure.