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प्रश्न
Give reason for the following:
Water does not run out of a dropper unless its rubber bulb is pressed.
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उत्तर
Atmospheric pressure acting from outside the dropper balances the pressure exerted by water and water does not come out of a dropper. On pressing the dropper inside pressure of water becomes more than outside atmospheric pressure and water run out.
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संबंधित प्रश्न
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