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Kinetic Theory of Gases — Physics STD 11 — Question

Tamilnadu BoardEnglish MediumSTD 11PhysicsKinetic Theory of Gases2 Marks
Question
Define Average speed. Write it equation.
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Answer

Average speed is defined as the mean (or) average of all the speeds of molecules.
$
\bar{v}=\frac{v_1+v_2+v_3+\ldots+v_n}{n}=\sqrt{\frac{8 RT }{\pi M }}=\sqrt{\frac{8 k T }{\pi m}} \Rightarrow \bar{v}=1.60 \sqrt{\frac{k T }{m}}
$

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