At the closest approach, the distance between Mars and Earth is found to be `58` million `km`. When planets are at this closest distance, how long would it take to send a radio message from a space probe of mars to earth?

Explanation

Distance between mars and earth `=58` million `km=58xx10^(6)km`
Time taken to send a radio message to earth `=("Distance")/("Velocity of light") = ((58xx10^(9)m))/((3xx10^(8)ms^(-1)))=193.3s`