With what energy must the radiation be given to image a bone of thickness 5 cm which has covering of skin of thickness of 2 cm on the both sides and the emerging intensity of the X – Ray is 200MeV. (impedance for bone = b for skin = s )

With what energy must the radiation be given to image a bone of thickness 5 cm which has covering of skin of thickness of 2 cm on the both sides and the emerging intensity of the X – Ray is 200MeV. (impedance for bone = b for skin = s ) Correct Answer 200e(4s + 5[

The formula goes like : I = I0e(-μt) where I is the final radiation, I0 is the initial radiation, μ is the impedance and t is the thickness. Since we know the emerging radiation, by using back processing formula, we get 200e(4s+5b).
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