A) 250 cm
B) 200 cm
C) 150 cm
D) 100 cm
Correct Answer: C
Solution :
For closed pipe\[{{l}_{1}}:{{l}_{2}}=1:3\] \[\therefore \] \[\frac{50}{{{l}_{2}}}=\frac{1}{3}\] \[\therefore \] \[{{l}_{2}}=150\,cm\]You need to login to perform this action.
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