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Q.

Is it true that we can experience the presence of atmospheric pressure using a rubber sucker?


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a

True

b

False 

answer is A.

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Detailed Solution

The above statement is True.
Take a rubber sucker and press it against a tile in the kitchen or bathroom. Now try to remove it; we will observe that it is very hard to pull it out. This is because the rubber sucker has created a partial vacuum and the air present outside the surface of the sucker holds it in place. Next, take a ceramic or stainless steel surface and stick the sucker on it. Now try to take it out; we will observe that irrespective of the angle of the plate, it is very difficult to take it out, which means that air exerts pressure in all directions.
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