A string wave equation is given $y=0.002 \sin (300 t-15 x)$ and mass density is $\mu=\frac{0.1\, kg }{m}$. Then find the tension in the string, (in $N$)
  • A$30$
  • B$20$
  • C$40$
  • D$45$
AIIMS 2019, Medium
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