1.

3. How long would it take for a radiowave of frequency 6 x 103 per sec to travel from mars to earth, distanceof 8 x 107Km.(Ans = 266s]

Answer»

Radio waves travel at the speed of light. So, in this case we have to use the formula of

distance = speed x time

Time=8×10^7Km/ 3×108ms−1=8×10^10m/ 3×108ms−1=266.66sec



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