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JEE CHEMISTRY MCQ: STRUCTURE OF ATOM

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A 100 watt bulb emits monochromatic light of wavelength 400 nm, the number of photons emitted per second by this bulb is

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Correct option: A

2 \times {10^{20}}\,{s^{ - 1}}

Option A (

2 \times {10^{20}}\,{s^{ - 1}}

) is correct because it is the number of photons emitted per second calculated using the power and wavelength of the light.

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