Question

Sound is a form of energy. State true or false.
A. True
B. False

Answer 1

Hint: Sound is described as the oscillation in the pressure, stress, particle displacement, particle velocity, etc. which is propagated in a medium with internal forces acting like viscous force or the superposition of such a propagated oscillation. Sound can also be taken as an excitation to the hearing mechanism that will result in the perception of sound. According to this definition, sound is taken as a sensation.

Complete answer:
First of all let us discuss the properties of sound.
Sound is a longitudinal wave. Basically sound is produced when something gets vibrated and sends a wave of energy which is also a vibration into our ears. A human ear can perceive sound only from $20Hz-20kHz$. Sound above this limit of value is termed as ultrasound and the sound below this level is known as infrared which can be perceived by some kinds of animals. This property of light is very useful in the field of health also. Therefore, in short we can say that sound is a longitudinal wave which carries a certain amount of energy with it. So the statement is perfectly true and the correct answer is given as option A.

Note: The sound vibrations can travel through the air or through any other medium which may be solid, liquid or gas to the ear. As the vibrations are stronger, then louder the sound will be. Sounds are in less intensity the further you get from the sound source. There will be a change in the perception of sound energy at different distances. The Doppler Effect of the sound is explained using this.