Correct option is C
Sound waves
• The sound is defined as a vibration that propagates as an audible wave of pressure,
through a medium such as a gas, liquid or solid.
• The disruption pattern that results from energy moving away from the sound source is
called a sound wave.
• Sound waves are longitudinal waves.
• Sound propagation from one point to another point is governed by Mechanical wave's
formula.
• This indicates that the direction of energy wave propagation and particle vibration
propagation are parallel.
• The atoms vibrate back and forth when they are in this state.
• There are high-pressure and low-pressure regions in the medium as a result of this
constant back and forth action. These areas of high and low pressure are referred to as
rarefactions and compressions, respectively.
Sabine's formula
• According to Sabine's formula, the reverberation time is used to find out the sound
quality in an auditorium, concert hall, or other places.
• Reverberation time is the time that is required by the sound to decay or fade away in an
enclosed area after stopping the source of the sound.
