Question

Some opera singers can use their powerful voices to break crystal glasses. To do this, they sing one note very loudly and hold it for a long time. While the opera singer holds the note, the walls of the glass move back and forth until the glass shatters. Explain in terms of resonance how the glass shatters.

Answer 1

sound is produced by vibrations , when the opera singers sings one note very loudly they creates strong vibrations which strucks the glass and as a result the glass shatters