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11-03-2024
Physics

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A 100 watt bulb emits monochromatic light of wavelength 4000 Å. Calculate the number of photons emitted per second by the bulb.
A. 4.969×10²⁰
B. 2.012×10²⁰
C. 4.969×10¹⁸
D. 2.012×10²¹

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