\(\text{Length of wooden strip} = \text{Perimeter of photograph}\)
\(\text{ Perimeter of photograph }\)= \(2 \times (length + breadth)\)
= \(2 (32 + 21) \)
= \(2 \times 53\) \(cm\)
= \(106\) \(cm\)
Thus, the length of the wooden strip required is equal to \(106\) \(cm\).
Complete the drawing shown in Fig. 9.14 to indicate where the free ends of the two wires should be joined to make the bulb glow