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Estimate the Number of Photons Emitted by the Sun in a Second

Question 139

Multiple Choice

Estimate the number of photons emitted by the Sun in a second. The power output from the Sun is 4 × 1026 W and assume that the average wavelength of each photon is 550 nm.


A) 1026
B) 1045
C) 1023
D) 1028
E) None of the above.

Correct Answer:

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