A) \[0.67\]
B) \[0.77\]
C) \[0.87\]
D) \[0.97\]
Correct Answer: C
Solution :
Terminal velocity \[v=\frac{2}{9}\frac{{{r}^{2}}(\rho -\sigma )g}{\eta }\] \[=\frac{2}{9}\times \frac{{{(20\times {{10}^{-6}})}^{2}}(2000-1000)\times 9.8}{1.0\times {{10}^{-3}}}\] \[=8.7\times {{10}^{-4}}m/s=0.87mm/s\]You need to login to perform this action.
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