9th Class Science Sound Question Bank Sound IIT JEE Subjective Problems

  • question_answer
    If wavelength of a sound wave in a medium is reduced by 50%, then what is the percentage change in its frequency?

    Answer:

    We know, \[n=\frac{V}{\lambda }\] As\[\lambda \]becomes\[\frac{1}{2};\]n becomes twice. Therefore, increase in frequency = +100%.


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