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Two lenses of power 15 D and -3 D are placed in contact.

Two lenses of power 15 D and -3 D are placed in contact. The focal length of the combinations is

Options

(a) 10 cm
(b) 15 cm
(c) 12 cm
(d) 8.33 cm

Correct Answer:

8.33 cm

Explanation:

No explanation available. Be the first to write the explanation for this question by commenting below.

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