If a Laser Light Pulse Was Sent Toward the Moon

question 241

Multiple Choice

If a laser light pulse was sent toward the Moon and some of this light were to be reflected toward Earth from retroreflectors 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

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Definitions:

1899

A year noted for marking the end of the Spanish-American War with the signing of the Treaty of Paris, leading to Spain ceding control of its colonies.

United Fruit Company

An American corporation that had a major influence in the banana industry in Latin America during the 20th century, often criticized for its role in exploiting labor and for its involvement in overthrowing governments.

Central America

A region in the Americas located between Mexico and South America, consisting of seven countries: Belize, Costa Rica, El Salvador, Guatemala, Honduras, Nicaragua, and Panama.