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Hrishant Goswami Grade: 10
        Iron emits K base α X-ray of energy 6.4 keV and calcium emits K base α X-ray of energy 3.69 keV. Calculate the times taken by an iron K base α photon and a calcium K base α photon to cross through a distance of 3 km
3 years ago

Answers : (1)

Kevin Nash
askIITians Faculty
332 Points
										Distance = 3 km = 3 * 10^3 m

C = 3 * 10^8 m/s
T = Dist/Speed = 3 * 10^3/3 *10^8 = 10^-5 sec.
⇒ 10 * 10^-8 sec = 10 μs in both case
3 years ago
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