A sodium vapor lamp has a power output of 60 W.If 547 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)10¹⁸ B)10²⁰ C)10³⁹ D)10²⁹ E)10²⁸

Question

Quizplus · Accepted Answer

First, calculate the energy of one photon using E = hc/λ. Then, divide the total power output by the energy per photon to find the number of photons emitted per second.

A Sodium Vapor Lamp Has a Power Output of 60