question_answer

For a concave mirror when object is placed beyond centre of curvature, an image is formed between principle focus and centre of curvature. The formed image is real inverted and diminished image. When object is placed at centre of curvature. The image is real inverted and of same size as that of object. Now answer the following questions: (a) What is the nature of image formed when object is placed beyond centre of curvature? (a) Real                                 (b) Virtual (c) Both A & B                    (d) No image is formed (b) An object is placed at centre of curvature of a concave mirror whose radius of curvature is 20 cm. The image is formed from pole at a distance is_______ (a) 10 cm                              (b) 20 cm (c) 30 cm                              (d) 15 cm (c) When object is placed at centre of curvature for a concave mirror the image formed is (a) Real inverted of same size (b) Virtual erect of same size (c) Real erect of same size (d) virtual inverted of same size.

Answer:

(a)          (A) ; (b)                                (B) ; (c)                 (A)