MCQ
A point traversed $3 / 4$ th of the circle of radius $R$ in time $t$. The magnitude of the average velocity of the particle in this time interval is
- A$\frac{\pi R}{t}$
- B$\frac{3 \pi R}{2 t}$
- ✓$\frac{R \sqrt{2}}{t}$
- D$\frac{R}{\sqrt{2} t}$
$v_{ av }=\frac{\text { Displacement }}{\text { Time }}=\frac{\sqrt{2} R}{t}$
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$(i)$ The average kinetic energy of each molecule of $H_2$ and $Ar$ are the same.
$(ii)$ The partial pressure due to argon gas is more than that due to hydrogen gas
($A$) $v_P+v_R=2 v_Q$
($B$) The rate of change in beat frequency is maximum when the car passes through $Q$
($C$) The plot below represents schematically the variation of beat frequency with time
(image)
($D$) The plot below represents schematically the variation of beat frequency with time
(image)