Question

Q5 If the power of a lens is - 2
D, what is its focal length? *
O O
(a) +50 cm
O
(b) -100 cm
O O
(c) -50 cm
O (d)
(d) +100 cm​

Answer 1

Answer:

a)+50cm

O

Explanation:

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Answer 2

Answer:

+100

Explanation:

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