Multiple choice

The famous Soprano singer Pavarotti demonstrated that he could break a glass plate by reciting a classical note. This is an example of

  1. law of conservation of energy

  2. energy density of sound

  3. power of music

  4. resonance
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

At resonance, the frequency of the external source becomes equal to the natural frequency of the object and the amplitude of the vibration becomes very large nearly infinite which is responsible for the breaking of the glass. 

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