A) \[{{E}_{f}}>{{E}_{r}}\]
B) \[{{E}_{f}}<{{E}_{r}}\]
C) \[{{E}_{f}}={{E}_{r}}\]
D) No relation can be given between \[{{E}_{f}}\] and \[{{E}_{r}}\] as data are not sufficient
Correct Answer: B
Solution :
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