state the reason why water gets filled in the dropper when we press the bulb of a dropper before placing it's nozzle in water
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The rise of water in the dropper is due to atmospheric pressure.
When the bulb of a dropper is pressed, the pressure inside the dropper decreases and this causes the water to go inside the dropper.
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state the reason why water gets filled in the dropper when we press the bulb of a dropper before placing it's nozzle in water
pressure
pressureThe air pressure inside the dropper decreases. The air acting on the surface of liquid becomes greater than the pressure inside the dropper.This forces the liquid to move up inside the straw.
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