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help on questions 19,20,21,22,23,24,25 chose from a,b,c,d

part of the eye is associated with the optic nerve D. papil а.jretina B. blind spot C, fovea 20. This eye problem is canuised by the image forning in front of the retina. A myopia B. hyperopin C. presbyopia 21. If 1.75 D power contact lens is needed to correct for nearsightedness, then the uncorrected far point is A. 40 cn B. 44cm C. 50 cm 22. Suppose Jane has a normal near point of 25 cm and is using a magnifying glass of f 14. cn. What is the maximum angular magnifcation? A. 2.4x C. 2.8x D. 2.6x B. 2.3x 23. For relaxed viewing on a microscope or telescope the eyepiece is adjusted to place the image at -?- A. the neat point B. the focal point C the pupil of the eye D. infinity 19 00 22 00 Teletupe given Dimitrin radians at λ-555nmof the Jane B Lox 107 C. 1.2x 10- D. 1.4x 107 OG 25. Most color-blindness is caused by ?- A. retina damage B. cataracts C. missing cone-type D. missing rod-type

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Answer #1

19 )correct option is a) retina

it transmits light signals through the optic nerve to the brain

20) correct option is a) myopia .

in myopia, the light sensitive tisues form object in front of the retina rather than on the retina.

21) the correct is option is d) 57 cm .

to find far point =1/P, P=power of lens. its in meter and we can change it to cm

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