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A convex lens is in contact with a conc...

A convex lens is in contact with a concave lens. The magnitude of the ration of their focal lengths is `2//3`. Their equivalent focal length is 30cm. What are their individual focal lengths?

A

`-75cm, 50 cm`

B

`-10 cm, 15 cm`

C

`-50 cm, 75 cm`

D

`-15cm, 10 cm`

Text Solution

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The correct Answer is:
D
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