A) x-axis
B) y-axis
C) z-axis
D) Line at equal angles to all the three axes
Correct Answer: A
Solution :
\[\vec{L}=\vec{r}\times \vec{p}=\left| \,\begin{matrix} {\hat{i}} & {\hat{j}} & {\hat{k}} \\ 1 & 2 & -1 \\ 3 & 4 & -2 \\ \end{matrix}\, \right|\]\[=-\hat{j}-2\hat{k}\] i.e. the angular momentum is perpendicular to x-axis.You need to login to perform this action.
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