Final answer:
The suitable grid frequencies for stationary grids in computed radiography are 152 lines/inch and 178 lines/inch. These higher frequencies allow better image quality by reducing scatter radiation effectively. The distance between fringes for a diffraction grating is also calculated using the provided formula and parameters.
Step-by-step explanation:
Among the grid frequencies suitable for stationary grids used in computed radiography, typically higher line frequencies are preferred. The options provided are 60 lines/inch, 152 lines/inch, and 178 lines/inch. Frequencies such as 152 lines/inch and 178 lines/inch would be considered suitable because they allow for better image quality by more effectively reducing scatter radiation without unnecessarily absorbing primary radiation.
Computed radiography systems operate using digital detectors that require grids that have higher line densities compared to conventional radiography to maintain image clarity and reduce noise. Generally, grid frequencies for computed radiology range from around 100 to 200 lines/inch, which would make options 2 and 3 (152 lines/inch and 178 lines/inch) appropriate.
For the analysis provided regarding diffraction gratings, let's use the equation provided: Ay = xλ/d. We know that 'Ay' is the distance between fringes on the screen, 'x' is the distance from the diffraction grating to the screen (1.50 m), λ is the wavelength of the light (600 nm), and 'd' is the separation between the lines in the grating. The diffraction grating has 125 lines per centimeter, so we first convert this to a distance by taking the reciprocal (1/125 cm) and then change units to meters (0.01/125 m).
Therefore, the distance d is 0.01/125 m, and the calculation for Ay becomes: Ay = (1.50 * 600 * 10^-9) / (0.01/125). Calculating this gives us the fringe separation, which allows us to understand how fringe patterns are formed in diffraction and their applications in various scientific and engineering fields.