State the reason why water gets filled in the dropper when we press the bulb of a dropper before placing its nozzle in water.
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19
Answer:
it is because when pressing the bulb air molecule from dropper get out from it and vaccum creates. when we place the dropper inside water and we release the bulb the wate gets in the dropper with the help of force exerted by vaccum in filling vaccum space in dropper .
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4
Answer:
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.
Explanation:
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