Question

The paper ball kept near the mouth of a plastic bottle lying on a
the horizontal plane will be pushed out when air is blown on it to force it
into the bottle because

Answer 1

Due to air pressure

Explanation:

Note: The question is bit unclear, the correct question means to say that why a paper ball lying on the horizontal plane will be  pushed out when air is blown on it  when we press the bottle.

• The paper ball is pushed out due to the air coming out of the bottle mouth.

• When we press the bottle it volume decreases and the air trapped inside tries to come out from the narrow mouth of the bottle.

• Since there  is very less space at the mouth of the bottle the pressure of the air increases as more air tries to escape from there.

• The out coming air hits the paper ball and it moves due to it.

Learn More:

Define pressure and the formula of pressure

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