SUPPOSE you were Stranded on a desert Island WIth oniy a convex lens and a' mirrior. Describe how you could use each Of these too15 to Signal For helpi
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A: (a)
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Q: draw a converging lens diagram
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A: Answer:- P = power of eye f = focal length of the eye lens do = The distance between the eye lens…
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Q: Spherical lenses suffer from
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Q: Assume the lens-to-retina distance of the human eye is 2.00 cm. Calculate the power P, in diopters,…
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Q: A very myopic man has a far point of 18.0 cm. What power eyeglasses (in diopters, held 1.47 cm from…
A: To correct this defect we have to insure that the far point for the person should be at infinity So…
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Q: Parallel rays enter a biconvex lens with a focal length of 12 cm. Where, within a distance of 1…
A: Given: The focal length of the biconvex lens is 12 cm.
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A: Solution:-Given thatPower of lens (P)=+3.00 DRefractive index (n)=1.520lens is equiconvex i.e.…
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A: Given, For Upper part, Image distance, di=135 cm. For Lower part, Image distance, di=45 cm, object…
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Q: Which of the following statements is true?(a) A larger-diameter lens can better resolve two…
A: Answer- ( option A ) A larger-diameter lens can better resolve two distantpoints is true statement.
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A: do represents the object distance (along x-axis) and di represents the image distance (along y-axis)
Q: ★★ A plastic magnifying lens (n = 1.45) has a magni- fication of 2.5 when the object-lens distance…
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- A person is nearsighted, and the relaxed eye focuses at a distance of 50 cm. What is the strength of the desired corrective lens in diopters? thats the full questionReading glasses use converging lenses. A simple magnifieris also a converging lens. Are reading glasses thereforemagnifiers? Discuss the similarities and differencesbetween converging lenses as used for these two differentpurposesA simple refracting telescope with an objective lens with focal length 2.00m and and eye piece of with focal length of 2.0 cm is used to view Mars when it is 6 x 107km from the Earth. For the purposes of this question assume the unaided human eye can resolve objects 0.002 radians apart, what feature size can be seen on Mars with telescope? For the purpose of his problem assume that the diameter of the telescope is sufficiently large that diffraction does not play a role. o 2400 km o 1200 km o 3600 km o 120 km
- A very myopic man has a far point of 21.0 cm. What power eyeglasses (in diopters, held 1.52 cm from the eyes) will correct his distant vision? DA severely myopic patient has a far point of 3.35 cm. By how many diopters should the power of his eye be reduced in laser vision correction to obtain normal distant vision for him? (Assume a lens-to-retina distance of 2.00 cm.) Additional Materials O ReadingSuppose a person's eyes have a relaxed power of 50.62 D. Assume a 2.00 cm distance from the retina to the lens of the eye. What is the far point of the person in m?
- 4. (b) You find two positive lenses fi=5.0 cm and f2 =30 cm from the storage room. How would you arrangefor them to construct a telescope? What is the magnification of your telescope? Is the image upright orinverted?Suppose that you wish to construct a telescope that canresolve features 6.5 km across on the Moon, 384,000 kmaway. You have a 2.0-m-focal-length objective lens whosediameter is 11.0 cm. What focal-length eyepiece is neededif your eye can resolve objects 0.10 mm apart at a distanceof 25 cm? What is the resolution limit set by the size of theobjective lens (that is, by diffraction)? use λ=560 nm