A) 6 cm and 48 cm
B) 48 cm and 6 cm
C) 8 cm and 64 cm
D) 64 cm and 8 cm
Correct Answer: A
Solution :
[a] \[{{f}_{0}}+{{f}_{e}}=54\] and \[\frac{{{f}_{0}}}{{{f}_{e}}}=m=8\Rightarrow {{f}_{0}}=8{{f}_{e}}\] \[\Rightarrow 8{{f}_{e}}={{f}_{e}}=54\Rightarrow {{f}_{e}}=\frac{54}{9}=6\] \[\Rightarrow {{f}_{0}}=8{{f}_{e}}=8\times 6=48\]
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