What is the wavelength (in nanometers (nm)) of a photon that has an energy of 2\times10^{-18}2×10
−18
joules?
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Answer:
99.3222 nm
Explanation:
Energy of a photon = (h*c)/ wavelength of photon
Where h = Plank's Constant = 6.626 x10^-34
c = speed of light in vacuum = 3 x10^8 m/s
Energy = 2 x10^-18 J
=>Wavelenth = (h*c)/Energy
=> Wavelength = (6.626 x10^-34 x 3 x10^8)/2 x10^-18
=> Wavelength = 9.93222 x10^-8 m or 99.3222nm
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