- #1
Magda|A380
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Homework Statement
The pion-zero meson has its mass quoted as 135.0MeV/c2.
It decays into two gamma rays:
∏0 → γ + γ
b) Assuming the ∏0meson to be initially at rest, calculate the energy and hence the wavelength of the two gamma rays.
Homework Equations
E= hc/λ
The Attempt at a Solution
Part a) just wanted me to calculate the mass in kg; which was fine, but I'm having trouble with part b).
E = 135.0 MeV, which I get to be 2.16x10-11J
I halved this value as there are two gamma rays, to get 1.08x10-11J
Using this value for E in the equation E=hc/λ, my value for λ is 1.84x10-14; however according to my book the answer should be 1.98x10-14
Could someone please tell me where I'm going wrong?
Thank you