A communication satellite is in orbit 36 000 km36\,000\text{ km}36000 km from a tracking station on Earth. A radio signal is sent from the station to the satellite and is transmitted back. How long does it take for the signal to make the round trip? (Take the speed of radio waves to be 3.0 × 108 m/s.)
0.12 ms0.12\text{ ms}0.12 ms
0.24 ms0.24\text{ ms}0.24 ms
0.12 s0.12\text{ s}0.12 s
0.24 s0.24\text{ s}0.24 s
198 exam-style questions on CIE IGCSE Physics Electromagnetic spectrum, covering Electromagnetic spectrum. Each one has a worked solution and a mark scheme showing where the marks go.