Question

What will be your observation if vacuum pump is on 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

Answer:

The medium is sucked by the pump.

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.