A) \[5[\hat{i}+\sqrt{3}\hat{j}]\]
B) \[5[\sqrt{3}\hat{i}+\hat{j}]\]
C) \[5[\sqrt{3\hat{i}}-\hat{j}]\]
D) \[5[\hat{i}-\hat{j}]\]
Correct Answer: B
Solution :
[b] Time period, \[T=\frac{2\pi m}{qB}=\frac{2\pi }{\pi \times 2}=1s\] Thus, particle will be at point P after \[t=\frac{1}{12}s\] \[\overset{\to }{\mathop{v}}\,=10\left[ \cos \,30\hat{i}+\sin \,30\hat{j} \right]\] \[\overset{\to }{\mathop{v}}\,=10\left[ \frac{\sqrt{3}}{2}\hat{i}+\frac{1}{2}\hat{j} \right]=5\left[ \sqrt{3}\hat{i}+\hat{j} \right]m{{s}^{-1}}\]You need to login to perform this action.
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