At $T$ $(K)$,the $P$,$V$ and $u_{rms}$ of $1$ mole of an ideal gas were measured. The following graph is obtained. What is its slope $(m)$? ($x$-axis $= PV$; $y$-axis $= u_{rms}^2$,$M =$ Molar mass)

  • A
    $\frac{3}{M}$
  • B
    $\frac{M}{3}$
  • C
    $\left(\frac{M}{3}\right)^{1/2}$
  • D
    $\left(\frac{3}{M}\right)^{1/2}$

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