Find the value of:
(i) \(2^6 = 2 \times 2 \times 2 \times 2 \times 2 \times 2 = 64\)
(ii) \(9^3 = 9 \times 9 \times 9 = 729\)
(iii) \(112 = 11 \times 11 = 121\)
(iv)\(54 = 5 \times 5 \times 5 \times 5 = 625\)
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. |