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A device is called oscillator is …

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A device is called oscillator is used to send waves along a stretched string .The string is 20cm long ,and four complete waves fit its length when the oscillator vibrates 30 times per second.For the wave on the string : what is their wavelength? What is their frequency? What is their speed?

    • Posted by Keshav Kumar 7 years, 2 months ago

    CBSE > Class 09 > Science
    • 1 answers

    Keshav Kumar 7 years, 2 months ago

    Wavelength = 20 ÷4=5 frequency =30×4=120hz speed = 120×5÷100 =6

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