AP EAMCET · PHYSICS · Waves and Sound
As shown in the figure, a block of mass \(9 \mathrm{~kg}\) is hung by a wire of area of cross-section of 1 \(\mathrm{mm}^2\) in a lift going up with an acceleration of \(2 \mathrm{~ms}^{-2}\). If the speed of the transverse wave on the wire is \(120 \mathrm{~ms}^{-1}\), the density of the material of the wire is
(Acceleration due to gravity \(=10 \mathrm{~ms}^{-2}\))
- A \(1.5 \mathrm{~g} \mathrm{~cm}^{-3}\)
- B \(3.5 \mathrm{~g} \mathrm{~cm}^{-3}\)
- C \(5.5 \mathrm{~g} \mathrm{~cm}^{-3}\)
- D \(7.5 \mathrm{~g} \mathrm{~cm}^{-3}\)
Answer & Solution
Correct Answer
(D) \(7.5 \mathrm{~g} \mathrm{~cm}^{-3}\)
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