The closest distance a book can be read from a pair of reading eyeglasses (Power = 1.55 dp) is 29.0 cm. What is the near distance?(Assume a distance between the eyeglasses and the eyes to be 2.50 cm)
The closest distance a book can be read from a pair of reading eyeglasses (Power =...
The closest distance a book can be read from a pair of reading eyeglasses (Power = 1.67 dp) is 29.5 cm. What is the near distance?(Assume a distance between the eyeglasses and the eyes to be 2.00 cm) (Answer in cm)
1.A convex (converging) lens produces a real, inverted image of an object that is magnified 2.80 times when the object is 43.0 cm from the lens. What is the focal length of the lens? 2. The closest distance a book can be read from a pair of reading eyeglasses (Power = 1.63 dp) is 29.0 cm. What is the near distance?(Assume a distance between the eyeglasses and the eyes to be 2.50 cm)
10. If eyeglasses with diverging lenses are used (Power = -1.14 dp), what is the far distance? (Assume a distance between the eyeglasses and the eyes to be 2.00 cm) cm
A farsighted woman breaks her current eyeglasses and is using an old pair whose refractive power is +5/3 diopters. Since these eyeglasses do not completely correct her vision, she must hold a newspaper 42.00 cm from her eyes in order to read it. She wears the eyeglasses 2.00 cm from her eyes. a.What is the focal length of the lenses? b.Are the lenses converging or diverging? Why? c.How far is her near point from her eyes? d.In order to be...
A pair of eyeglasses is designed to allow a person with a far-point distance of 2.44 m to read a road sign at a distance of 24.4 m . a) Find the focal length required of these glasses if they are to be worn 1.50 cm from the eyes. b) Find the focal length required of these glasses if they are to be worn 0.750 cm from the eyes.
A pair of eyeglasses is designed to allow a person with a far-point distance of 2.44 m to read a road sign at a distance of 24.4 m . a) Find the focal length required of these glasses if they are to be worn 1.50 cm from the eyes. b) Find the focal length required of these glasses if they are to be worn 0.750 cm from the eyes.
an older person needs a pair of reading glasses.Her near point is at 48 cm from her eyes and reading glasses are 2 cm from her eyes. The glasses should allow her to read 25 cm away. What are the object and image distances? what is the magnification of these lenses? What is the focal length of the pair of glasses? What is the optical power of the lens pair? What type of lenses (converging, diverging) does she need?
ReviewPart A A pair of eyeglasses is designed to allow a person with a far-point distance of 2.52 m to read a road sign at a distance of 25.2 m. nd the tocal length required of these glasses A2 2.7 Submit Previous Answers Request Answer X Incorrect; Try Again; 12 attempts remaining Part B Find the focal length required of these glasses it they are to be woin 1.25 cm from the eyes. ΑΣφ Submit Request Answer ReviewPart A A...
At age 45, a person is fitted for reading glasses that have a power equal to 2.13 D in order to read at 25.0 cm. By the time she reaches the age of 55, she discovers herself holding her newspaper at a distance of 38.0 cm in order to see it clearly with her glasses on. Assume the glasses are placed 2.2 cm from her eyes. (a) Where was her near point at age 45? (b) Where is her near...
A person struggles to read by holding a book at arm's length, a distance of 49 cm away. What power of reading glasses should be prescribed for her, assuming they will be placed 2.1 cm from the eye and she wants to read at the "normal" near point of 25 cm ?