רפורמה ריק לא שמתי לב long sightedness and short sightedness הרכב תמרון כובש
a) What is long-sightedness? State the two causes of long-sightedness. With the help of ray diagram, show:i) the eye defect long sightednessii) correction of long-sightedness using a lensb) An eye has a
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