- Home
- Standard 11
- Physics
12.Kinetic Theory of Gases
normal
વાયુના અણુની ઝડપો $2, 3, 4, 5, 6\, km/sec$ છે.તો $rms$ ઝડપ ............. $\mathrm{km/sec}$
A
$2.91$
B
$3.52$
C
$400$
D
$4.24$
Solution
${v_{rms}} = \sqrt {\frac{{v_1^2 + v_2^2 + v_3^2 + v_4^2 + v_5^2}}{5}} = \sqrt {\frac{{{2^2} + {3^2} + {4^2} + {5^2} + {6^2}}}{5}} $$ = \sqrt {\frac{{100}}{5}} = \sqrt {20} = 4.24$
Standard 11
Physics
Similar Questions
normal