NCERT Example 9.7 - Ray Optics and Optical Instruments
Question: A small pin of size 0.5 cm is placed at 27 cm in front of a convex lens of focal length 18 cm. Find location and size of image. Is the image real or virtual?
Answer: Image at **54 cm** on the other side; size **1.0 cm**; **real and inverted**.
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