What is the maximum wavelength of a photon that can produce a proton/anti-proton pair? The mass of a proton is 1.67 * 10^-27kg. A)5.0 * 10^-19 m B)1.0 * 10^-18 m C)6.6 * 10^-16 m D)1.3 * 10^-15 m E)There is no upper limit.

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Quizplus · Accepted Answer

The maximum wavelength of a photon that can produce a proton/anti-proton pair can be found by using the energy-mass equivalence formula: E=mc^2. The minimum energy required to create a proton-antiproton pair is twice the rest mass energy of a proton, which is 2*(1.67x10^-27 kg)*(3.00x10^8 m/s)^2 = 3.01x10^-10 J. The minimum energy of a photon required to create a pair is the same as the energy required to create a pair, so the formula E=hc/λ can be used to find the maximum wavelength: λ = hc/E = (6.63x10^-34 J*s)(3.00x10^8 m/s)/(3.01x10^-10 J) = 6.60x10^-16 m = 6.6x10^-4 nm = 660 nm. The best choice is therefore (C) 6.6x10^-16 m.

What Is the Maximum Wavelength of a Photon That Can