1.

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.

Answer»

(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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