22.
The power of a combination of two lenses in contact is + 10 D. If the focal length of one
of the lenses of the combination is + 200 cm, the focal length of the other lens would be:
(a)
- 120.0 cm
(b) + 80.0 cm
(c)
- 25.0 cm
(d)
- 20.0 cm
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Answer:
a is the answer
Explanation:
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