The intensity \((I)\) of a sound wave depends on the distance \((x)\) from the source as:

1. \(I\propto x\) 2. \(I\propto \dfrac1x\)
3. \(I\propto \dfrac1{x^2}\) 4. none of the above
Subtopic:  Energy of Waves |
 76%
From NCERT
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Which of the following statement is correct?

1. The energy of any small part of a string remains constant in a travelling wave.
2. The energy of any small part of a string remains constant in a standing wave.
3. The energies of all the small parts of equal length are equal in a travelling wave.
4. The energies of all the small parts of equal length are equal in a standing wave.

Subtopic:  Energy of Waves |
 59%
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