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When we press the bulb of a dropper with...

When we press the bulb of a dropper with its nozzle kept in water , air in the dropper seems to escape in the 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 pressure of water gravity of the earth (c) shape of rubber bulb atmospheric pressure.

A

pressure of water

B

gravity of the earth

C

shape of rubber bulb

D

atmospheric pressure.

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