Flater the curve more is the elasticity at the point of intersection.
Dear student,
When 2 demand curves intersect each other, then the flatter curve is more elastic at the point of intersection.
demand curves DD (flatter curve) and D1D1 (steeper curve) intersect each other at point E. At this point, OQ quantity is demanded at the price of OP. When price rises from OP to OP1, the quantity demanded falls from OQ to OQ2 for demand curve DD and from OQ to OQ1 for demand curve D1D1. With the same change in price (PP1), change in demand (QQ2) in case of demand curve DD is more than change in demand (QQ1) in case of demand curve D1D1. It means, demand is more elastic in case of DD (flatter curve) as compared to D1D1 (steeper curve).
Regards