keval3267 keval3267

08-01-2024
Physics

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How many photons are contained in a burst of red light (689 nm) that contains 89.4 mJ of energy?
a) 2.62 x 10¹⁹
b) 3.05 x 10¹⁹
c) 3.68 x 10¹⁹
d) 4.21 x 10¹⁹

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