A) \[20\times {{10}^{3}}m/{{s}^{2}}\]
B) \[120\times {{10}^{3}}m/{{s}^{2}}\]
C) \[8\times {{10}^{5}}m/{{s}^{2}}\]
D) \[4\times {{10}^{8}}m/{{s}^{2}}\]
Correct Answer: C
Solution :
Acceleration \[={{\omega }^{2}}r={{(2\pi f)}^{2}}r=4{{\pi }^{2}}{{f}^{2}}r\] \[=4{{\pi }^{2}}\times 1\times (2\times {{10}^{4}})\] \[=8\times {{10}^{5}}m/{{s}^{2}}\]
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