what is field dimension/distance to field in-camera lens?
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what is field dimension/distance to field in-camera lens?
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- When do (known as object distance) is very large, what does the thin lens equation predict for the value of 1/f? Similarly, when do (object distance) is very small or less, what does the thin lens equation predict for the value of 1/f?A farsighted person cannot see objects closer to the eye than 80 cm. Determine the power of the spectacle lens which will enable her to read at a distance of 25 cmA 2 cm high object is viewed through a diverging lens with a -12 cm focal length. If the object is 8cm from the lens, then realtive to the lens where is the image and what is its height?
- A simple refracting telescope with an objective lens with focal length 2.00m and and eye piece of with focal length of 2.0 cm is used to view Mars when it is 6 x 107km from the Earth. For the purposes of this question assume the unaided human eye can resolve objects 0.002 radians apart, what feature size can be seen on Mars with telescope? For the purpose of his problem assume that the diameter of the telescope is sufficiently large that diffraction does not play a role. o 2400 km o 1200 km o 3600 km o 120 kmQuestion is belowhi please solve this question , make sure its correct In X-ray imaging, to achieve a well-defined small area of X-ray beam, the anode of the X-ray tube is usually bevelled. By assuming that the bevel angle is 15° and the distance between the X-ray source and the patient is 30 cm, (i) Determine the width of actual focal spot needed to achieve the effective focal spot of 1 mm. (ii) Calculate the coverage of the X-ray beam