52. If a farsighted patient’s near point of eyes is 40 cm, what kinds of lens and focal length of a corrective lens have to enable the eye
to see clearly an object 20 cm away?
(A) converging lens, f = 13.3 cm
(B) diverging lens, f = 13.3 cm
(C) converging lens, f = 40 cm
(D) diverging lens, f = 40 cm
(E) converging lens, f = 20 cm
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統計: A(7), B(3), C(42), D(7), E(3) #2016154
統計: A(7), B(3), C(42), D(7), E(3) #2016154