How far from a 59.0- mm -focal-length lens must an object be placed if its image is to be magnified 3.50× and be real? B)
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A) How far from a 59.0- mm -focal-length lens must an object be placed if its image is to be magnified 3.50× and be real?
B)
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- The image is formed on the retina even when the distance of the object from the eye increases The lens of the eye becomes thinner and the focal length increases. O The lens of the eye becomes thicker and the focal length decreases. The lens of the eye becomes thinner, and the focal length decreases. с The lens of the eye is not affected and remains the same thickness. OA contact lens is made of plastic with an index of refraction 1.50. The lens has an outer radius of curvature of + 1.65 cm and an inner radius of curvature of + 5.85 cm. What is its focal length? TTTT Paragraph Arial 3 (12pt) E - E - T- 回i 公 T T, Bullet List O f. Mashups- HTML CSSa) Find an equation for the length L of a refracting telescope in terms of the focal length of the objective fo and the magnification m. L = (b) A knob adjusts the eyepiece forward and backward. Suppose the telescope is in focus with an eyepiece giving a magnification of 20.3. By what distance must the eyepiece be adjusted when the eyepiece is replaced, with a resulting magnification of 1.0 ✕ 102? Must the eyepiece be adjusted backward or forward? Assume the objective lens has a focal length of 2.32 m. (Use a positive value if the eyepiece must be moved forward toward the objective lens and negative values if the eyepiece must be moved backwards.) cm
- plz answer in details, thanksnot a graded assignment1. A patient enters an eye doctor’s office and finds the doctor tells him that his near point is 10.0 cm. The doctor also finds the patient’s far point (with eyes relaxed) is 125 cm. Each eye lens can be assumed to be 2.00 cm from the retina. a) Between what limits (units: diopters) does the power of this patient’s lens (technically lens+cornea combination) vary? b) The doctor is going to prescribe glasses. Calculate the power of the eyeglass lens the patient should use for relaxed distance vision. Is the lens converging or diverging?
- A camera lens used for taking close-up photographs has a focal length of 55.0 mm. The farthest it can be placed from the film is 33.0 mm. What is the closest object that can be photographed? answer choices a)8.25 cm b)3.30 cm c)6.60 cm d)5.08 cmA certain camera is able to focus on objects from 1.13 m to ∞o. Suppose you want to take an extreme close-up shot, with the camera 19 cm from the object. Find the focal length of a thin lens that could be placed directly in front of the camera lens such that the image of the close object would be in focus. (Let's denote the minimum and maximum values of the focal length by fmin and fmax, respectively.) 228 m -u I fmin = fmax = XXA) how far from the object should this lens be placed? B) what focal length eyepiece would give an overall magnification of -55? C) what focal length eyepiece would give an overall magnification of -100?