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(a) If Harry has a near point of $1.5 \mathrm{~m}$, what focal length contact lenses does he require? (b) What is the power of these lenses in diopters?
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(a) If Harry has a near point of $1.5 \mathrm{m},$ what focal length contact lenses does he require? (b) What is the refractive power of these lenses?
" Power of a contact lens is 1.5 Diopters. (a) The contact lens is converging lens or diverging lens ? (b) What is the focal length of the contact lens ? (c) Nearsighted eye or farsighted eye ? If farsighted eye, what then will be the far point ?"
THE FAR POINT DISTANCE OF OF A SHORT SIGHTED PERSON IS 1.5 M , FIND THE FOCAL LENGTH , POWER AND NATURE OF TH LENSES NEEDED
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