cover the mouth of the tumbler full with water with thick card turn the tumbler upside down while keeping the card press to its mouth remove the hand pressing the cards gently you will find that the card continues to hold water in the Tumbler even after it is not supported by your hand what could be reason behind it
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yeh q..hai yah ans.........
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Answer:
Explanation:
BECOZ of the air which is in it
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