A) 8.0 cm
B) 56.0 cm
C) 64.0 cm
D) 72.0 cm
Correct Answer: B
Solution :
\[{{E}_{1}}\propto 64\] \[{{E}_{1}}-{{E}_{2}}\propto l\] \[{{E}_{2}}\propto l\] \[\therefore \] \[64-l=8\] or \[l=64-8=56cm\]You need to login to perform this action.
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