A) 810
B) 900
C) 800
D) 820
Correct Answer: A
Solution :
\[r=\frac{e{{\beta }^{2}}}{1-{{\beta }^{2}}}=\frac{190\times {{(0.9)}^{2}}}{1-{{(0.9)}^{2}}}=810\,\,microns\]You need to login to perform this action.
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