Question

4. Two thin converging lenses of focal lengths 20 cm and 40 cm are placed coaxially 20 cm apart. An object is located at a distance of 48 cm from the first lens. Find, (i) the position of the image (24 cm to the right of the second lens) (ii) the positions of the principal points and (answer +12 cm, -16 cm) (iii) the positions of the focal points. (24 cm) Indicate these positions in a diagram.

Answer 1

Answer:

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