Question

Sound is said to be propagated when __________.

• A. sound waves spread in all direction from source of sound
• B. the sound is not generated by source
• C. sound wave is restricted at the receiver
• D. sound wave is restricted at source

Answer 1

The correct option is A sound waves spread in all direction from source of sound

Sound wave propagates from source to receiver like a wave. At source, the sound is generated and spreads in all directions and is not restricted at one point for the receiver to hear the sound. Sound needs a medium to propagate and cannot travel in vacuum.