A Light-Emitting Diode Has a Power Output of 0

question 33

Multiple Choice

A light-emitting diode has a power output of 0.3 W. If 590 nm is the average wavelength of the source, about how many photons are emitted per second? (h = 6.63 *10^-34 J.s, c = 3.00 *10⁸ m/s, and 1 nm = 10^-9 m)

• A) 10²¹
• B) 10²⁵
• C) 10¹⁸
• D) 10²⁹

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Definitions:

Mohawk

A member of a Native American tribe, part of the Iroquois Confederacy, traditionally based in what is now the northeastern United States.

Iroquois

A historically powerful northeast Native American confederacy known as the Haudenosaunee, consisting of six nations: Mohawk, Onondaga, Oneida, Cayuga, Seneca, and Tuscarora.

Joseph Brant

A Mohawk military and political leader who played a significant role during the American Revolutionary War, aligning with the British against American settlers.

Loyalists

Colonists in America who remained loyal to the British Crown before and during the American Revolutionary War, opposing the revolution.