Ray Optics and Optical Instruments

Question: A convex lens is in contact with concave lens. The magnitude of the ratio of their focal length is 2/3. Their equivalent focal length is 30 cm. What are their individual focal lengths

1) – 75, 50

2) – 10, 15

3) 75, 50

4) – 15, 10

Solution:

Explanation: No Explanation

Refraction at Curved Surface

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