Question

2. (a) A beam of electrons of energy 4800 keV is allowed to fall on a Gold target (Z=79) to produce x-rays. Calculate the percentage (%) of energy that is lost to heat and percentage of energy that is utilized to produce x-rays. (b) If the current carried by the electron beam in (a) is 0.4 A then find the efficiency of the system to produce x-rays. Efficency= \frac{P}{VI} 3. (a) An x-ray film is exposed to x-rays of intensity 4 x 10$^5$. After exposure you found that the Optical Density of the film is 2.8, as measured by a densitometer. Find the intensity of the transmitted x-rays. (b) Find the contrast of the low speed film B in the bellow figure. 4. For Graduates only: Find the sensitivity of film B in the above figure.

          2. (a) A beam of electrons of energy 4800 keV is allowed to fall on a Gold target (Z=79) to produce x-rays. Calculate the percentage (%) of energy that is lost to heat and percentage of energy that is utilized to produce x-rays.
(b) If the current carried by the electron beam in (a) is 0.4 A then find the efficiency of the system to produce x-rays.
Efficency= \frac{P}{VI}
3. (a) An x-ray film is exposed to x-rays of intensity 4 x 10$^5$. After exposure you found that the Optical Density of the film is 2.8, as measured by a densitometer. Find the intensity of the transmitted x-rays.
(b) Find the contrast of the low speed film B in the bellow figure.
4. For Graduates only: Find the sensitivity of film B in the above figure.

2. (a) A beam of electrons of energy 4800 keV is allowed to fall on a Gold target (Z=79) to produce x-rays. Calculate the percentage (%) of energy that is lost to heat and percentage of energy that is utilized to produce x-rays.
(b) If the current carried by the electron beam in (a) is 0.4 A then find the efficiency of the system to produce x-rays.
Efficency= (P)/(VI)
3. (a) An x-ray film is exposed to x-rays of intensity 4 x 10^5. After exposure you found that the Optical Density of the film is 2.8, as measured by a densitometer. Find the intensity of the transmitted x-rays.
(b) Find the contrast of the low speed film B in the bellow figure.
4. For Graduates only: Find the sensitivity of film B in the above figure.

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