PUMPA - SMART LEARNING
எங்கள் ஆசிரியர்களுடன் 1-ஆன்-1 ஆலோசனை நேரத்தைப் பெறுங்கள். டாப்பர் ஆவதற்கு நாங்கள் பயிற்சி அளிப்போம்
Book Free Demo- Crumple a small piece of paper into a ball of size smaller than the mouth of an empty bottle.
- Hold the empty bottle on its side and place the paper ball just inside its mouth.
- Now try to blow on the ball to force it into the bottle.
Why is it difficult to force the paper ball into the bottle?
It is because the air near the mouth has , with air pressure, when the air is blown into the mouth of the bottle.
The air pressure near the mouth is the pressure inside the bottle. Due to this pressure inside the bottle, the paper ball comes out.
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