Match the entries in Column I with those in Column II. | Column I | Column II | | :--- | :--- | | (i) Concave mirror | (a) Spherical mirror with a reflecting surface that curves inwards. | | (ii) Convex mirror | (b) It forms an image which is always erect and diminished in size. | | (iii) Convex lens | (c) Object placed behind it may appear inverted at some distance. | | (iv) Concave lens | (d) Object placed behind it always appears diminished in size. |
(i) Concave mirror matches with (a) Spherical mirror with a reflecting surface that curves inwards. (ii) Convex mirror matches with (b) It forms an image which is always erect and diminished in size. (iii) Convex lens matches with (c) Object placed behind it may appear inverted at some distance. (iv) Concave lens matches with (d) Object placed behind it always appears diminished in size.
Explanation
The chapter defines a concave mirror as having a reflecting surface that curves inwards. A convex mirror always forms erect and diminished images. For lenses, Activity 10.9 shows that a convex lens can produce inverted images at certain distances, while a concave lens always makes objects appear diminished.