Q: what is the refractive power for a pair of glasses with a focal length of 2.5 cm?
A: Required to find the refractive power.
Q: Create a ray diagram for eyeglasses that contain a converging lens. Assume you are looking at a 2 cm…
A: in this question for ray diagram we use 3 rules of of refraction then draw diagram.
Q: A camera lens used for taking close-up photographs has a focal length of 25.0 mm. The farthest it…
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Q: The distance from the eye’s lens to the retina for a given person is 2.9 cm. This person clearly…
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Q: A magnifier is labeled “5×.” What would its magnification be if used by a person with a near-point…
A: M=Df D is the least distance of distance vision f is the focal length Least distance of distance…
Q: A thin convex lens of focal length 5 cm is used as a simple microscope by a person with normal near…
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Q: A radio telescope has a parabolic dish with a width of 89 meters. The collected radio signals are…
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Q: The objective of a telescope has a focal length of 100 cm and its eyepiece has a focal length of 5.0…
A: Magnification of a telescope when viewing an object at infinity is M = fo/ fe Where fo = focal…
Q: Discuss the different types of microscopes
A: Microscope: It is an optical instrument which is used to magnify the small objects. The…
Q: A telescope has an objective lens with a focal length of 82 cm and an eyepiece with a focal length…
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Q: A lens has a focal length of 28 cm and a diameter of 4.0 cm. What is the f - number of the lens?
A: Given:Focal length of the lens = 28 cmDiameter of the lens = 4 cm
Q: Under what conditions a diverging lens will produce a real image? Group of answer choices with a…
A: A diverging lens is a concave lens. A diverging lens diverges the light rays incident on it. A…
Q: The power of the lenses of a certain physician’s eyes is 59 D. Assume the distance between a retina…
A: Given, P=59 D di=2.00 cm
Q: 7. The refractive power of a lens of focal length 40 cm is *
A: Given, Focal length (f)= 40cm = 40/100 m = 0.4m
Q: The distance of the object is 30 cm, the image distance is 60 cm. What is the focal length of this…
A: The objective of the question is to calculate the focal length of a converging lens given the object…
Q: What is the power in diopters of a camera lens that has a 59.5 mm focal length?
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Q: An object is 23 cm in front of a diverging lens that has a focal length of -17 cm. How far in front…
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Q: If the eyepiece of a telescope is replaced with an eyepiece with a focal length twice as long, the…
A: Here, we have to calculate the magnifying power.
What do the terms field of view and depth of field mean for microscopes?
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