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Q: Astigmatism is due to light rays O a. passing through the lens in the vertical direction not…
A: Introduction: Astigmatism is an eye defect in which the front surface of the eye inside the eye is…
Q: What is the focal length of this lens with power of 2.50 diopters and the diameter is 5.0 cm O 25 cm…
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Q: Q.2/ A plano-convex lens is to be constructed out of glass so that a focal length of 40 cm. what is…
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Q: A lens with a refractive index of 1.5 has a radius of curvature R on both surfaces. a) Find the…
A: To find the focal length of the lens in terms of the radius of curvature R , we can use the…
Q: Which of the following is NOT an advantage that a larger lens has over a smaller lens (all other…
A: While a larger aperture diameter might increase the brightness and sharpen the focus, increasing the…
Q: e lenses of the eyes of a person with the given vision defect and the kind of lenses needed to…
A: If both sides of the lens curve outward, it is called a converging lens, and it will bend light…
Q: A lens produces a virtual image located 33.8 cm from the lens when the object is located 18.5 cm…
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Q: What is the focal length of a pair of contact lenses that allow a near-sighted man with a far-point…
A: Write a given values of this question. v=-200cm=-2m Object is very distant. u=∞m=10m
Q: A 2.0-cm-diameter spider is 2.0 m from a wall. Determine the focal length and position (measured…
A: It is given that, ho=2 cmhi=1 cm As the image is to be formed on the wall, so it must be real.…
Q: Diogo has a converging lens of focal length ?f. He places an object at position 2?2f in front of it,…
A: Diogo has a converging lens of focal length f. Initially he places the obeject at 2f and get image…
Q: A microscope creates a virtual image that is inverted. Explain how this happens since a single lens…
A: Talking about a microscope create a virtual image that is inverted as the microscope consist of two…
Q: A 1.5-cm object is placed 0.50 m to the left of a diverging lens with a focal length of 0.20 m. A…
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Q: A diverging lens always makes a reduced image. Could you use such a lens to start a fire by focusing…
A: Lenses are of two types converging and diverging. The light gets refracted through a lens. A…
Q: What is the focal length of a contact lens that will allow a person with a near point of 125 cm to…
A: Given,near point distance, q = -125cmobject distance, p = 25cm
Q: A person with bad vision can focus clearly on objects between 50.0 cm and 80.0 cm from his eyes.…
A: Use the lens equation and solve for the focal length of the lens for the closeup vision.
Q: What are some real world applications of a concave lens? Why might it be useful to use a concave…
A: Application of concave lens in real world are as follow :- Concave lens is used camera Laser…
Q: Farsightedness (i.e., difficulty seeing nearby objects) can usually be corrected with (A) converging…
A: Farsightedness (i.e., difficulty seeing nearby objects) can usually be corrected with (A) converging…
Q: How do corrective lenses help improve vision in people? Produce an image of the object at a distance…
A: In the treatment of the patients who are sufferings from the errors such as myopia, hyperopia the…
Q: Does the corrective lenses create virtual or real images? Justify your answer?
A: The corrective lenses are those type of lenses which are used to improve the vision of the human…
Q: Why must projectors and cameras form real images? Does the lens in the eye form real or virtual…
A: Projectors and Cameras form real images because only real images can be caught on screen.
Q: Suppose that you were stranded out in the forest and needed to make a fire. You have a concave lens;…
A: We can make a fire using concave lens using some tricks because concave lens is a diverging lens…
Q: If a bulb is x meters from a wall. select a lens that will create an image on the wall that is 3…
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Q: What kind of lens can be used to produce a real image?
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Q: A give person has a near point of 0.45 m and a far point of 6.35 m. Imagine that this person comes…
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Q: What are some real world applications of a convex lens? Why might it be useful to use a convex lens?
A: This is a question regarding convex lenses and their applications. A convex lens is a lens that is…
Q: What is the difference between a concave and convex lens? Provide applications for each.
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Q: While you are photographing a dog, it begins to move away.What must you do to keep it in focus?(a)…
A: The expression for the focal length of a lens can be written as: 1f=1u+1v Here, f is the focal…
Q: You are designing contact lenses for someone whose near point is 65 cm. What focal length lens…
A: Consider the near point, that is the distance of the image be v, the object’s distance be u, and the…
Q: Can you see a virtual image? Can you photograph one? Can one be projected onto a screen with…
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Q: What should be the object distance from the convex lens (f=15 cm), that makes a virtual image that…
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Q: You are designing contact lenses for someone whose near point is 75 cm. What focal length lens…
A: Using lens formula,
Q: The nearpoint of an eye is 55 cm. A corrective lens is to be used to allow this eye to clearly focus…
A: Part(a) What should be the focal length of the lens. Part(b) Power of the needed corrective lens.…
Q: A person is having farsightedness vision defect because, а. the eye become too short O b. the eye…
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Q: What is the focal length of a convex lens of focal length 30cm in contact with a concave lens of…
A: Given: f1 = + 30 cm f2 = - 20 cm
Q: Spherical aberration is due to light rays O a. passing through the outer portions of a lens not…
A: Spherical aberration is an optical effect which can be seen in optical devices such as lenses and…
Q: A converging lens of focal length 4 m produces a magnified image 2.4 times the size of the object.…
A:
Q: In order to start a fire, a camper turns a lens toward the sun to focus its rays on a piece of wood.…
A: Focal length, f = 10 cm
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