1. Fireflies emit light across the visible spectrum, but the peak intensity of their emission is...

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Physics

1. Fireflies emit light across the visible spectrum, but thepeak intensity of their emission is around a wavelength of 550 nm.So letâ€™s make the approximation that all of the light emitted by afirefly has a wavelength of 550 nm. (a) A typical flash of lightfrom a firefly lasts for about 100 ms and has a power of 1.2 mW.How many photons are emitted in each flash. (b) An â€œelectron voltâ€(eV) is a unit of energy. It is the energy that an electron gainswhen it â€œfalls throughâ€ a potential difference of 1.0 V. What is anelectron volt, in Joules. (c) Energy is stored in a fireflyâ€™s body(just like in your body) in ATP molecules. The amount of energyprovided by metabolizing one ATP molecule is 0.30 eV. How many ATPmolecules does the firefly need to metabolize to emit onephoton

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4.4 Ratings (907 Votes)

Assuming the firefly emits wavelength 550nm amount of energyemitted ish being the Plancks constant c is the velocity of light andlambda denotes its wavelengthThis is the energy emitted by a See Answer

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