Question

In the experiment to demonstrate that air exerts pressure, when ice cold water is poured over a sealed tin can containing hot air, the can collapses. Pick the correct explanation for the experiment.

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A

The can collapses because the pressure inside the can falls below the pressure outside the can

B

The can collapses because the pressure outside the can falls below the pressure inside the can

C

The air pressure inside the can is same as the pressure outside the can

D

Insufficient information

Hard

Solution

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Correct option is
A

The can collapses because the pressure inside the can falls below the pressure outside the can

When cold air is poured on the can,  some
steam in the can condenses into water,
reducing the amount of air inside. The
pressure of air inside the can decreases
than the pressure exerted by the air
from outside the can. As a result the
can gets compressed.

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