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A long string of mass per unit length 0.2 Kg/m is stretched to a tension of 500 N and a traverse wave of amplitude A=10 mm and λ=0.5 m is travelling on this string. If this string is joined to another string of same cross section and mass per unit length 0.8 Kg/m, the fraction of average power carried by the wave in the first string to that of average power transmitted to the second string is K/9. Then the value of K is. (Answer upto two digits after the decimal point) |
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Answer» A long string of mass per unit length 0.2 Kg/m is stretched to a tension of 500 N and a traverse wave of amplitude A=10 mm and λ=0.5 m is travelling on this string. If this string is joined to another string of same cross section and mass per unit length 0.8 Kg/m, the fraction of average power carried by the wave in the first string to that of average power transmitted to the second string is K/9. Then the value of K is |
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