A) 0.25
B) 0.40
C) 0.50
D) 0.60
Correct Answer: A
Solution :
Here \[\frac{{{P}_{1}}}{{{P}_{2}}}={{\left( \frac{{{r}_{1}}}{{{r}_{2}}} \right)}^{2}}\] \[\frac{{{P}_{1}}}{{{P}_{2}}}={{\left( \frac{1}{2} \right)}^{2}}\] \[\frac{{{P}_{1}}}{{{P}_{2}}}=0.25\]You need to login to perform this action.
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