If we were to send a laser light pulse toward the Moon and some of this light were to be reflected toward Earth from retro-reflectors left on the Moon by astronauts,how long after the transmission of the initial flash would the reflected light be detected through a telescope on Earth?
A) 2.56 microseconds
B) 2.56 seconds
C) 1.28 seconds
D) 1.28 milliseconds

Question

Quizplus · Accepted Answer

The average distance to the Moon is about 384,400 km. Light travels at approximately 299,792 km/s. The round trip for the light pulse would take about 2.56 seconds (1.28 seconds each way).

If We Were to Send a Laser Light Pulse Toward