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Suppose that we have a monochromatic non-diverging beam of x rays that are incident on a slab of Pb. Inside the Pb plate there are three apertures (openings) that allow the beam of x rays to be incident on a water phantom as shown in the figure below.
(a) In the compartment of water denoted by the dotted line, calculate:
(i) The number of photoelectric interactions per second,
(ii) The number of Compton interactions per second
(iii) The number of coherent scatters interactions per second.
(iv) The energy absorbed per second.
(b) What thickness of air (dair) is needed in order that the number of Compton scatter interactions in air are the same as in the volume of water in (a)?
(c) What thickness of bone (dbone) is needed in order that the number of Compton scatter interactions in bone are the same as in the volume of water in (a)?
Electrical Bell: 1.An electromagnet, which is made by winding insulated copper wire on a soft iron core. 2.An armature which is soft iron strip with spring. 3.A soft iron
Which of the following particles has more electrons than neutrons: (1) C (2) F- (3)O -2 (4)Al +3 Ans: O -2
Advantages of fibre optics: Fibre-optic communications systems have a large bandwidth, e.g. 1 GHz. The bandwidth is the maximum rate at which information can be transmitted.
The project consists of a word processed (typed) report submitted by the project report due date. Late submissions are penalized 10% of the mark per day, including Saturdays and Su
Why magnetic poles are reversed at a given position on a deflection magnetometer to take readings? The magnetic moment of the magnet is 30 A-m 2 . Its length 10cm. What is its
explain the process of power generation and transmission?.
find time period and frequency of vibration of water level in a limb of manometer executing simple harmonic vibrations
2 Kg of ice at -20 degree C is mixed with 5Kg of water 20 degree C in an insulating vessel having negligible heat capacity. Calculate the final mass of water remaining in the comta
Presumptuous that it is understood that the object is in front of the mirror and anything on the other side of the mirror is behind the mirror is the following statement sufficient
what is physics
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