When we release the pressure on the bulb of a dropper with its nozzle kept in water, it gets filled with water. The rise of water in the dropper is due to
a) Pressure of water
b) Atmosphericpressure
c) Gravity of the earth
d) Shape of the bulb of the dropper
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Explanation:
Water rises in the dropper due toatmospheric pressure. When bulb is pressed, air present in tube and bulb escapes in the form of bubbles. However, there is atmospheric pressure on surface of liquid. When we release the bulb, the water moves inside the tube.
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