The nearpoint of an eye is 55 cm. A corrective lens is to be used to allow this eye to clearly focus on objects 25 cm in front of it. What should be the focal length of this lens? Answer in units of cm. What is the power of the needed corrective lens? Answer in units of diopters.
Q: A simple telescope has an objective with a focal length of 90 cm and an eyepiece of focal length 5…
A:
Q: The magnification produced by a converging lens is found to be 2.4 for an object placed 22 cm from…
A:
Q: A farsighted student wears contact lenses with a prescription of +2.50 Diopters. This allows her…
A: Step 1:Contact lens power is +2.50 Diopters.Exam distance from the contact lens is 25cmEyes…
Q: A photographer uses his camera, whose lens has a 70 mmmm focal length, to focus on an object 2.0 mm…
A:
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…
A:
Q: 30a. Ana place a 2.5-cm-tall figurine is 8.0 cm to the left of a convex lens of 6.0-cm focal length.…
A:
Q: is measured to be 31 cm. The actual focal length of this lens is 28 cm. What is the percent error of…
A:
Q: A man with a near point of 58.2 cm is using a magnifying glass of focal length 12 cm sees an image…
A:
Q: ou wish to purchase a telescope that is easy to transport from one location to another. You finally…
A: The distance between both the lenses is given by L=f0+fe where f0 is the focal length of objective…
Q: A thin lens has a focal length of 25.0 cm. (a) Find the location of the image (in cm from the lens)…
A:
Q: A diverging lens has a focal length of 20.6 cm. An object 1.71 cm in height is placed 131 cm in…
A: The lens equation is 1f=1v-1u The magnification is given by m =vu=h'h where, u is the distance of…
Q: correct their vision so that they can see objects that are as close as 10 cm to their eye, what…
A:
Q: . Two converging lesnses, A and B, have focal lengths of 15 cm and 30 cm respectively. If an object…
A: Object distance: dOA = 25 cm in front of lens A Focal length of lens A: fA = 15 cm Focal length of…
Q: A near-sighted person has a far-point of 7.45 m. To correct their vision, what should be the focal…
A:
Q: (a) A near point of a person's eye is 60.0 cm. To see objects clearly at a distance of 25.0 cm, what…
A: Near point = 60 cm Object distance (d) = 25 cm
Q: A diverging lens has a focal length of 21.8 cm. An object 2.67 cm in height is placed 109 cm in…
A: (given) Focal length (f) of diverging lens = -21.8 cm Height (h) of an object = 2.67…
Q: A physicist's left eye is myopic (i.e., nearsighted). This eye can see clearly only out to a…
A: Myopic defects arises due to gradual weakening of ciliary muscles and diminishing the flexibility of…
Q: Let us assume that a given hypertropic eye has a near point 256cm. The desired lens is to allow the…
A:
Q: A magnifying glass has a converging lens of focal length 18.9 cm. At what distance from a nickel…
A: Given,
Q: 7. A farsighted man uses eyeglasses with a refractive power of 2.00 diopters. Wearing the glasses…
A:
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…
A:
Q: A particular farsighted person's eye can normally focus on an object at 80 cm. This person wants to…
A: Given data The farsight of the person is given as F = 80 cm. The distance between the corrective…
Q: a far sighted person has a near point of 98 cm. to correct their vision so they can see objects…
A:
Q: A thin lens shown has a focal length with a magnitude of 5.33 cm. If an object is placed 1.54 cm to…
A: Given,1v=1f+1u Focal length,f=5.33cmObject Distance,u=-1.54cm We have to calculate the image…
Q: A person needs a lens of power 5.5 diopters for correcting his distant vision. For correcting his…
A: a) The expression for find focal length of the lens for correcting distant vision is f=1P Insert…
Q: A prescription for reading glasses has a power of P = 2.24 D. What is the focal length of the…
A:
Q: You are given two converging lenses with focal lengths, 15.0 cm and 1.00 cm hollow tube. You can put…
A: To make a telescope, we need to place the lenses in such a way that they work together to form a…
Q: Suppose a lens is placed in a device that determines its power as 2.99 diopters. (a) Find the focal…
A: Given, Power of lens = 2.99 diopter Patient's near point =? We need to find, (a) Focal length of…
Q: 14. A person on a safari wants to take a photograph of a hippopotamus from a distance of 75.0 m. The…
A: The object distance is u=75.0 m=7500 cm. The height of animal is ho=4.00 m=400 cm. The height of…
Q: A lens that is constructed from a glass, whose index of refraction is 3, has a focal length of 22…
A: Given data: Index of refraction of first lens (μ1) = 3 Focal length of first lens (f1) = 22 cm Focal…
Q: A person with a nearsighted eye has near and far points of 16 cm and 27 cm, respectively. Assuming a…
A: Step 1:Distance from the near point is 16cmDistance from the far point is 27cmDistance of the lens…
Q: Two converging lenses have 17.8 cm focal length, and are placed 16.12 cm apart. An object is placed…
A: Given: f1=f2=17.8 cmu1=23.0 cmd=16.12 cm
Q: 5.7. A glass lens with radii ri =+ 6.50 cm and r2 = + 3.20 cm has a thickness of 2.80 cm and an…
A: Given that, r1 =+6.50 cm r2 =+3.20 cm μ =1.550
Q: A camera lens used for taking close-up photographs has a focal length of 28.4 mm. The farthest it…
A: Given: f=28.4 mm v=24 mm
Q: An object is placed distance so = 6.59 cm from a lens made from material with index of refraction…
A: Let n denotes the refractive index, R1 and R2 denote the radius of curvature of the convex and…
Q: The near point of a person's eye is 60.0 cm. What is the approximate power of the correcting lens…
A:
Q: An image of the moon produced by a converging lens is focused onto a screen; the focal length is f.…
A:
Q: Hanhyun and Gwangwoo are experimenting with lenses. They take a double convex lens with radii…
A:
Q: (8) A thin lens is made from material having an index of refraction of 1.65. The front surface of…
A: The focal length of the lens is calculated with lens makers formula .By substituting the radii of…
Q: A near sighted person has a far-point of 3.68 m. to correct their vision, what should the focal…
A: Far point, D = 3.68 m Lens distance, d = 2 cm Focal length, f = ?
Q: The near point of an eye is 75.0 cm. (a) What should be the power of a corrective lens prescribed to…
A:
Q: A prescription for reading glasses has a power of P = 2.42 D. What is the focal length of the…
A: Given data: Power (P) = 2.42 D Required: Focal length in cm
Q: A telescope has an angular magnification of -30 ×× and a barrel 1.05 mm long. What is the focal…
A: Given data: Angular magnification (m) = -30.Length of the barrel (L) = 1.05 mm = 1.05×10-3 m. To…
Trending now
This is a popular solution!
Step by step
Solved in 2 steps