Iron emits ka x rays of energy 6.4 kev and calcium emits ka x rays of energy 3.69. Calculate the time taken by an iron ka photon and calcium ka photon to cross through a distance of 3 km?
satender , 7 Years ago
Grade 12th pass
1 Answers
Navdeep Singh
Last Activity: 6 Years ago
Distance = 3 km = 3 x10^3m C = 3 x10^8m/s t = D/C = 10^-5 sec. => 10 x10^-8sec = 10 microseconds in both cases.
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