Alarm Bell Is Kept Inside Vessel As Shown In Figure Below

An alarm bell is kept inside a vessel as shown in the figure below. A person standing close … loudness of alarm get affected for the…


The loudness of the sound will decrease as the air is removed slowly from the plastic bottle. If the air in the plastic bottle is removed completely, there is vacuum in the bottle. The sound cannot travel through vacuum and we cannot hear the sound of the alarm clock at all.