(a)
(i) As\(\frac{2}{3}\) × \(\frac{5}{10}\) = 10 / 30
Therefore, the number in the box, such that \(\frac{2}{3}\)× __ = \(\frac{10}{30}\) is \(\frac{5}{10}\)
(ii) The simplest form of \(\frac{5}{10}\) is \(\frac{1}{2}\).
(b)
(i) As \(\frac{3}{5}\) × \(\frac{8}{15}\) = \(\frac{24}{75}\).
Therefore, the number in the box, such that \(\frac{3}{5}\) × __= \(\frac{24}{75}\) is \(\frac{8}{15}\).
(ii) As \(\frac{8}{15}\) cannot be further simplified, therefore, its simplest form is \(\frac{8}{15}\).
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. |