A nearsighted person has near and far points of 12.0 and 23.0 cm , respectively. Part A If she puts on contact lenses with power P = -3.00 D , what are her new near and far points?
A nearsighted person has near and far points of 12.0 and 23.0 cm , respectively. Part...
(1.) Nearsightedness (a.) A nearsighted person has a far point that is 323 cm from her eye. Her lens in a pair of glasses is 2 cm in front of her eye. What focal length is required to cast the image of a far-away object at her far point? (b.) If these glasses are used to view an object 525 cm from her eye, where do her glasses cast the image? In both cases, quote your distance as measured from...
A person has a near point of 14 cm and a far point of 82 cm. Is the person nearsighted or farsighted? What focal length corrective lens will allow this person to read the whiteboard from the back of a large classroom? Are the corrective lenses converging or diverging? What is the power of the corrective lenses?
An individual is nearsighted; his near point is 12.0 cm and his far point is 42.0 cm. (a) What lens power is needed to correct his nearsightedness? diopters (b) When the lenses are in use, what is this person's near point? X Enter a number is within 10% of the correct value. This may be due to roundoff error, or intermediate results to at least four-digit accuracy to minimize roundoff error. cm
A nearsighted person wears contact lenses of refractive power -6.0 D. What is her far point? 17 cm 6.0 cm -17 cm -4.0 cm -6.0 cm
An individual is nearsighted; his near point is 15.0 cm and his far point is42.0 cm. (a) What lens power is needed to correct his nearsightedness? diopters (b) When the lenses are in use, what is this person's near point? cm
An individual is nearsighted; his near point is 13.0 cm and his far point is 46.0 cm. (a) What lens power is needed to correct his nearsightedness? in diopters (b) When the lenses are in use, what is this person's near point? in cm
A nearsighted student wears contact lenses to correct for a far point that is 4.50m from her eyes. When she is not wearing her contact lenses, her near point is 24cm What is her near point when she is wearing her contacts? Express your answer using two significant figures.
3) (20 points) A nearsighted person has a far point located only 521 cm from the eye. Assuming the eyeglasses are worn 2 cm in front of the eye, find the focal length needed for the diverging lenses of the glasses so the person can see distant objects.
With a near point of 12.0 cm, a nearsighted technician can focus on relatively nearby objects. Yet, with a far point 58.0 cm out, he cannot clearly see distant objects without optical aid. (a) Calculate the focal length (in cm) of a contact lens that would enable this technician to clearly view very distant objects. (Hint: Allow p to approach infinity in the thin-lens equation). (b) What power (in diopters) describes this contact lens? (c) When this contact lens is...
A nearsighted person has a far point of 21.5cm and is prescribed contact lenses to correct her vision. What lens strength (a.k.a., lens power), in Diopters, should be prescribed? Give your answer using the usual convention of positive values for converging lenses and negative values for diverging lenses. Please enter a numerical answer below. Accepted formats are numbers or "e" based scientific notation e.g. 0.23, -2, 146, 5.23e-8