Question

If we turn a glass filled with water and cover with index card upside down . Why does not card fall down?

Answer 1

Answer:

this happens so

Explanation:

because when we fill the glass till its extreme top we eliminate air and when we put the card on top of it and when we invert it the card does not fall because there is suction due to vaccum.

HOPE IT HELPS....KINDLY MARK AS BRAINLIEST