Mark out the correct options. (a) The energy of any small part of a string remains constant in a travelling wave.

Monjur Alahi

Mark out the correct options.
(a) The energy of any small part of a string remains constant in a travelling wave.
(b) The energy of any small part of a string remains constant in a standing wave.
(c) The energies of all the small parts of equal length are equal in a travelling wave.
(d) The energies of all the small parts of equal length are equal in a standing wave.


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Salim Ahmed Kawsar

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(b) The energy of any small part of a string remains constant in a standing wave.

EXPLANATION: 

In a traveling wave, energy is transmitted from one region of space to other but in a standing wave, the energy of one region is always confined in that region. Hence option (b) is true.

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