Answer on Astronomy | Astrophysics Question for King
The mean free path of photons in stars is of the order of 0.2 cm. Show that the time
taken for a photon to reach the surface of a star of radius 4 Ro is of the order of one
The time for beam traveling is given by the expression t = (Ro)^2/(l*c) or in our case t = 16*(Ro)^2/(l*c). Thus, t = 16*(6.96*10^8 m)^2/(2*10^-3 m * 3*10^8 m/s) = 412000 years.
Need a fast expert's response?
and get a quick answer at the best price
for any assignment or question with DETAILED EXPLANATIONS!