Physics for IGCSE & O level - Rays And Waves (Section 10 - No. 48)
How does a speaker create sound?
By making a current oscillate in a transmitting antenna.
By making radio waves vibrate.
By producing a copy of the original sound.
By converting radio waves into electrical signals.
ব্যাখ্যা
A loudspeaker produces a copy of the original sound.