A) \[25\times {{10}^{-3}}m/s\]
B) \[2.50\times {{10}^{-3}}m/s\]
C) \[1.25\times {{10}^{3}}m/s\]
D) \[\frac{hv}{4}\]
Correct Answer: A
Solution :
Time period of the earth on its own axis \[T=24h=24\times 60\times 60s\] \[\therefore \] Angular velocity \[\omega =\frac{2\pi }{T}\] \[=\frac{2\pi }{24\times 60\times 60}\] \[=\frac{2\pi }{86400}rad/s\]
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