A. 0.06 D
B. 0.02 D
C. 0.03 D
D. 0.04 D
E. no option is correct
Correct Answer:
Option E – no option is correct
Explanation
V = – 50, U = 25CM
(1)/r = (1)/v + (1)/u = (1)/-50 + (1)/25 = (1 + 2)/50 = (1)/50 f = +50cm = +0.5m
p = (1)/r = (1)/0.5 = (10)/5 = 2 diopters
The power of a lens is the reciprocal of the focal length in meters. it is expressed in diopters.
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