Question

A child kept an empty plastic bottle in a refrigerator.After few hours,she found that the bottle has collapsed.Explain the possible reason

Answer 1

as thewater had become ice its surface area increases as a result bottle get elongated

Answer 2

The bottle was collapsed because of pressure exerted on the bottle from outside.

As we know that he air contacts when cooled.

So when she kept the bottle in the refrigerator, it contracted.

And the air outside the bottle exerted its pressure on the bottle due to which it collapsed.