JEE Main 202229 Jul, Evening shiftPhysicsEasyKinetic Theory of Gases52× since 2002The root mean square speed of smoke particles of mass 5×10−17 kg5 \times 10^{-17} \mathrm{~kg}5×10−17 kg in their Brownian motion in air at NTP is approximately. [Given k=1.38×10−23JK−1\mathrm{k}=1.38 \times 10^{-23} \mathrm{JK}^{-1}k=1.38×10−23JK−1]AOption A. 60 mm s−160 \mathrm{~mm} \mathrm{~s}^{-1}60 mm s−1BOption B. 12 mm s−112 \mathrm{~mm} \mathrm{~s}^{-1}12 mm s−1COption C. 15 mm s−115 \mathrm{~mm} \mathrm{~s}^{-1}15 mm s−1DOption D. 36 mm s−136 \mathrm{~mm} \mathrm{~s}^{-1}36 mm s−1CheckSkip · show solution
