(a)
(i) \(\frac{1}{2}\) × 24 = 12
(ii) \(\frac{1}{2}\) × 46 = 23
(b)
(i) \(\frac{2}{3}\) × 18 = 12
(ii) \(\frac{2}{3}\) × 27 = 18
(c)
(i) \(\frac{3}{4}\) × 16 = 12
(ii) \(\frac{3}{4}\) × 36 = 27
(d)
(i) \(\frac{4}{5}\) × 20 = 16
(ii) \(\frac{4}{5}\)× 35 = 28
Match the items given in Column I with one or more items of Column II.
Column I | Column II |
(a) A plane mirror | (i) Used as a magnifying glass. |
(b) A convex mirror | (ii) Can form image of objects spread over a large area. |
(c) A convex lens | (iii) Used by dentists to see enlarged image of teeth. |
(d) A concave mirror | (iv) The image is always inverted and magnified. |
(e) A concave lens | (v) The image is erect and of the same size as the object. |
- | (vi) The image is erect and smaller in size than the object. |