A) \[\frac{2\pi }{t}\]
B) \[\frac{2\pi }{3t}\]
C) \[\frac{\pi }{3t}\]
D) \[\frac{\pi }{t}\]
Correct Answer: B
Solution :
Point A shell record zero magnetic field (due to \[\alpha -\] particle) when the \[\alpha -\] particle is at position P and Q as shown in figure. The time taken by \[\alpha -\] particle to go from P to Q is |
\[t=\frac{1}{3}\frac{2\pi }{\omega };\,\,\,\,\omega =\frac{2\pi }{3t}\] |
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