Question

The paper ball kept near the mouth of plastic bottle will be pushed out when wind is blown

from mouth because

a) the air pressure inside the bottle is same as that of mouth

b) the air pressure inside the bottle is less than at the mouth

c)the air pressure inside the bottle is more than at the mouth

d)there is no such pressure inside and outside the bottle​

Answer 1

When we blow into the mouth of the bottle, the air near the mouth has higher speed. This decreases the pressure there. The air pressure inside the bottle is higher than near the mouth. The air inside the bottle pushes the ball out.

Answer 2

Answer:

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Explanation:

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