Atomic StructureEasy
Question
As its closest approach, the distance between the Mars and the Earth is found to be 60 million km. When the planets are at this closest distance, how long would it take to send a radio message from a space probe sent to Mars from Earth?
Options
A.5 s
B.200 s
C.0.2 s
D.20 s
Solution
$\text{Time = }\frac{\text{Distance}}{\text{Speed}} = \frac{60 \times 10^{6} \times 10^{3}}{3 \times 10^{8}} = 200\text{ sec}$
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