Question

An object is placed at a distance 30 cm from the first convex lens of focal length 10 cm. Then, a concave lens of focal length 10 cm is placed at a separation of 5 cm from the first convex lens.Now, another convex lens of focal length 30 cm is placed at 15 cm distance from the first convex lens. Find the location of final image formed. Also, represent the combination of lens and draw a ray diagram for the image formed by the first convex lens.

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