Question
An older person wears bifocals. The lower portion of the lens is converging and has a...
An older person wears bifocals. The lower portion of the lens is converging and has a focal length of 80 cm. The upper portion is diverging and has focal length of - 50 cm. What are near and far points of person’s unaided eye?
Draw separate diagram for each lens label near and far points which ever is applicable.
PLEASE DRAW THE 2 SEPARATE DIAGRAMS, ONE FOR EACH LENS, AND LABEL THE NEAR AND FAR POINTS.
Problem 14 An older person wears bifocals. The lower portion of the lens is converging and has a focal length of 80 cm. The upper portion is diverging and has focal length of - 50 cm. What are near and far points of person's unaided eye? Draw separate diagram for each lens label near and far points which ever is applicable.
Answers
* In mybia person is not able to see fax objects clearly. We use Concave lens to Correct it. tot = 1/2 U=0 * see vef or far point = f = 50cm Ane In Hypermetropia, berson are not able to nearby objects clearly. We use Convex lens to correct it here u=-25c.m hear point of normal eye. 5-86 =-11 400 too = -366 36c.m or hearpoint 36.360.m -bet → + são 80 80 25.Date: Image at far point. location at Object Ato Image object 256 m (At neas point)
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