Question

What will be your observation if vacuum pump is off and ringer is on

Answer 1

Explanation:

Sound needs a medium to travel.

The vacuum pump pumps out the air, and thus the medium through which the sound travels is pumped out.

So, the sounds gets fainter.

Answer 2

Explanation:

$Sound needs a medium to travel. </p><p></p><p>The vacuum pump pumps out the air, and thus the medium through which the sound travels is pumped out.</p><p>So, the sounds gets fainter</p><p></p><p>$

Sound needs a medium to travel.

The vacuum pump pumps out the air, and thus the medium through which the sound travels is pumped out.

So, the sounds gets fainter