A) \[\sqrt{kr}\]
B) \[k{{r}^{-3/2}}\]
C) \[\frac{k}{2}{{r}^{0}}\]
D) cannot be determined from the given information
Correct Answer: C
Solution :
| [c] \[{{\upsilon }^{2}}=kr\] |
| \[\Rightarrow \] \[2\upsilon \frac{d\upsilon }{dt}=k\frac{dr}{dt}\] |
| \[\Rightarrow \] \[\frac{d\upsilon }{dt}=\frac{k}{2}\] |
| \[\Rightarrow \] \[{{\upsilon }_{2}}-{{\upsilon }_{1}}=\frac{k}{2}({{t}_{2}}-{{t}_{1}})\] |
| \[\upsilon =\frac{k}{2}\] |
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