Question

2. The number of the glasses of a person is + 0.75 D. What is the nature of the lens and what
its focal length?
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Answer 1

Answer:

(a) Number of glasses = power = + 0.75D

p=100/f

→0.75=100/f

→f=100/0.75=100×100/0.75

→f=133.33 cm

Step-by-step explanation:

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