A) \[\frac{3k}{5}\]
B) \[\frac{2k}{5}\]
C) \[k\]
D) \[\frac{5}{2k}\]
Correct Answer: D
Solution :
| [d] |
| \[{{\ell }_{A}}=\frac{2\ell }{5},{{\ell }_{B}}=\left( \frac{3\ell }{5} \right)\] |
| \[K\ell ={{K}_{A}}{{\ell }_{B}}={{K}_{B}}{{\ell }_{B}}\] |
| \[K\ell ={{K}_{A}}\left( \frac{2\ell }{5} \right)\] |
| \[{{K}_{A}}=\frac{5K}{2}\] |
| \[\Rightarrow \]\[{{K}_{B}}=\frac{5K}{3}.\] |
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