Fig. shows four cells fixed on a board. Draw lines to indicate how you will connect their terminals with wires to make a battery of four cells.

To make a battery of cells, the positive terminal (+) of one cell always be connected to negative terminal (-) of another cell.

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. |

The bulb in the circuit shown in Fig. does not glow. Can you identify the problem? Make necessary changes in the circuit to make the bulb glow.

Draw the circuit diagram to represent the circuit shown in Fig.


