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Q. |
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 passingthrough a bone of 4mm is {{}} |
A. | 3 Wm-2 |
B. | 2.5 Wm-2 |
C. | 2.0 Wm-2 |
D. | 1.8 Wm-2 |
Answer» D. 1.8 Wm-2 |
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