NCERT Exercise 9.1 — Q15 - Light — Reflection and Refraction
Question: An object of height 7 cm is placed at 27 cm in front of a concave mirror of focal length 18 cm. Find the position, nature and size of the image. Should a screen be placed on the same side as the object or on the opposite side?
Answer: We are given the following values: object height h = +7 cm, object distance u = -27 cm, and focal length f = -18 cm (negative for a concave mirror). To form a sharp image, the screen must be placed...
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