A) 216 yrs
B) 144 yrs
C) 72 yrs
D) 36 yrs
Correct Answer: A
Solution :
Earth | Planet |
\[{{R}_{1}}=1.5\times {{10}^{10}}m\] | \[{{R}_{2}}=54\times {{10}^{10}}\text{ }m\] |
\[{{T}_{1}}=1\text{ }year\] | \[{{T}_{2}}=?\] |
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