(i) 50000000 = 5 x 107
(ii) 7000000 = 7 x 106
(iii) 3186500000 = 3.1865 x 109
(iv) 390878 = 3.90878 x 105
(v) 39087.8 = 3.90878 x 104
(vi) 3908.78 = 3.90878 x 103
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. |