Question 10
When we press the bulb of a dropper with its nozzle kept in water, air in the dropper is seen 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

(a) pressure of water
(b) gravity of the earth
(c) shape of rubber bulb
(d) atmospheric pressure

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Solution

(d) atmospheric pressure

When the pressure on the dropper is released, the pressure inside the dropper becomes less than the atmospheric pressure. So, the atmospheric pressure pushes the water to rise.

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Atmospheric Pressure

Standard X Geography

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(d) atmospheric pressure When the pressure on the dropper is released, the pressure inside the dropper becomes less than the atmospheric pressure. So, the atmospheric pressure pushes the water to rise.

(d) atmospheric pressure

When the pressure on the dropper is released, the pressure inside the dropper becomes less than the atmospheric pressure. So, the atmospheric pressure pushes the water to rise.