The ratios of lengthareas of cross-section and Young's moduliiof steel of that of brass wires shown in the figure are a,b and c respectively . The ratio of increase in the lengths of brass of that of steel wires is [Assume that the masses ofsteel and brass wires are negligible]

The ratios of lengthareas of cross-section and Young's moduliiof steel

1.	The ratios of lengthareas of cross-section and Young's moduliiof steel of that of brass wires shown in the figure are a,b and c respectively . The ratio of increase in the lengths of brass of that of steel wires is [Assume that the masses ofsteel and brass wires are negligible]
Answer» `(4a)/(7BC)` `(7 BC)/(4a)` `(4bc)/(7a)` `(7a)/(4bc)` ANSWER :3