MCQ
In the gas equation $\text{PV = RT, V}$ is the volume of:
- ✓$1$ mol of gas
- B$1g$ of gas
- CGas
- D$1$ litre of gas
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(if $\mu_{0}$ : permeability of free space and $B$ : magnetic field)

$\overrightarrow{{r}}=10 \alpha {t}^{2}\, \hat{{i}}+5 \beta({t}-5)\, \hat{{j}}$
Where $\alpha$ and $\beta$ are dimensional constants. The angular momentum of the particle becomes the same as it was for ${t}=0$ at time ${t}=$ .....$seconds.$