(i)\(\frac{2}{5}\)÷ \(\frac{1}{2}\) = \(\frac{2}{5}\) × 2 = \(\frac{4}{5}\)
(ii) \(\frac{4}{9}\) ÷ \(\frac{2}{3}\) = \(\frac{4}{9}\) × \(\frac{3}{2}\) = \(\frac{2}{3}\)
(iii) \(\frac{3}{7}\) ÷ \(\frac{8}{7}\) = \(\frac{3}{7}\)× \(\frac{7}{8}\) =\(\frac{3}{8}\)
(iv) 2\(\frac{1}{3}\) ÷ \(\frac{3}{5}\) = \(\frac{7}{3}\) ÷ \(\frac{3}{5}\) = \(\frac{7}{3}\) ×\(\frac{5}{3}\) = \(\frac{35}{9}\)
(v) 3 \(\frac{1}{2}\) ÷ \(\frac{8}{3}\) = \(\frac{7}{2}\) ÷ \(\frac{8}{3}\) = \(\frac{7}{2}\) × \(\frac{3}{8}\) = \(\frac{21}{16}\)
(vi) \(\frac{2}{5}\) ÷ 1\(\frac{1}{2}\)= \(\frac{2}{5}\) ÷ \(\frac{3}{2}\) = \(\frac{2}{5}\) × \(\frac{2}{3}\) = \(\frac{4}{15}\)
(vii) 3 \(\frac{1}{5}\) ÷ 1 \(\frac{2}{3}\) = \(\frac{16}{5}\) ÷ \(\frac{5}{3}\) = \(\frac{16}{5}\) × \(\frac{3}{5}\) = \(\frac{48}{25}\)
(viii) 2\(\frac{1}{5}\) ÷ 1\(\frac{1}{5}\) = \(\frac{11}{5}\) ÷ \(\frac{6}{5}\) = \(\frac{11}{5}\) × \(\frac{5}{6}\) = \(\frac{11}{6}\)
Types | Week I | Week II | Week III | Week IV | Total |
Type A | 2650 | 1640 | - | - | 8820 |
Type B | - | 1520 | 1650 | 1730 | - |
Type C | 3240 | - | - | 2550 | 8750 |
Type D | 2960 | 1220 | - | - | 8270 |
Total | 10730 | - | 7530 | - | - |
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. |