Your near point is 40 cm. How far from a plane mirror would you need to...
Ex2: A very myopic person has a near point of 8 cm, and a far point of 20 cm. What power lens does he need to see clearly at a distance? What is his new near point with this vision correction?
A concave mirror has a 40 cm radius of curvature. How far from the mirror must an object be placed to create an upright image three times the height of the object?
Susan is quite nearsighted; without her glasses, her far point is 38 cm and her near point is 18 cm . Her glasses allow her to view distant objects with her eye relaxed. With her glasses on, what is the closest object on which she can focus? Express your answer with the appropriate units.
7.[10 pts) A nearsighted student has his near point at 16.0 cm and far point at 45.0 cm without his glasses. He then uses a glasses that allow him to view distant objects with his eye relaxed. With his glasses on, what is the closest object on which he can focus?
1. Suppose there is a plane mirror hanging on the wall, and it is shorter than you are, but you stand close to it and can see your entire body, as in the diagram. Use ray tracing to show that you will continue seeing your entire body even when you walk towards or away from the mirror. Try it an see for yourself - I did and it really works. Obviously, you need a hanging mirror, not a full wall-height...
Claudia is nearsighted. She has a near point of 12 cm and a far point of 17 cm. If the corrective lens is 2.0 cm from Claudia’s eye, what lens power will enable her to see distant objects clearly? -6.7 diopters +8.5 diopters -5.3 diopters – 17 diopters
Susan is quite nearsighted; without her glasses, her far point is 38 cm and her near point is 12 cm . Her glasses allow her to view distant objects with her eye relaxed. With her glasses on, what is the closest object on which she can focus?
A hyperbolic mirror has equation T. You wish to shoot a beam of light from the point (-40, 23) to reflect off the mirror and arrive at the focus closest to the point (-40, 23). At what slope should you aim the beam of light? Round to 2 decimal places 16 A hyperbolic mirror has equation T. You wish to shoot a beam of light from the point (-40, 23) to reflect off the mirror and arrive at the focus...
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...
With a near point of 15.0 cm, a nearsighted professor can focus on relatively nearby objects. Yet, with a far point 62.0 cm out, he cannot clearly see distant objects without optical ald. (a) Calculate the focal length (in cm) of a contact lens that would enable this professor 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? diopters (c) When this contact lens...