(a) Increase in weight = Decrease in weight
(b) 30 km north = 30 km south
(c) 80 m east = 80 m west
(d) Loss of Rs 700 = Profit of Rs 700
(e) 100 m above sea level = 100 m below sea level
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