Question

Attenuation coefficient of bone is 600 m^-1 for x-rays of energy 20 keV and intensity of beam of x-rays is 20 Wm^-2 , then intensity of beam after passing through a bone of 4 mm is 

A. 3 Wm^-2 

B. 2.5 Wm^-2 

C. 2.0 Wm^-2 

D. 1.8 Wm^-2

Answer 1

The Correct option is D. 1.8 Wm^-2

Comments

I = Io e^-(mx)
I = 20 z
I = 20 * e-(0.004 * 600)
I = 1.8