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নিচের কোনটি সত্য? (Which one of the followings is true?)

V_{1} = P_{0} (\frac{t ° c + 273}{273})

\frac{P V}{T} = \frac{W}{M} R

\frac{D_{1}}{P_{1} T_{1}} = \frac{D_{2}}{P_{2} T_{2}}

\frac{r_{1}}{r_{2}} = \sqrt{\frac{d_{1}}{d_{2}}}

C = \sqrt{\frac{3 P}{M}}

ANS : 0

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