[5] Waves of period T= 1 sec move in a channel shown in drawings below. Wave height at Section (1) is H= 20 cm. Compute the wave height at Section (2).

b₁=5 m. Section (1) d₁=1 m. Top View b-10 Side View Channel bottom Sidewall b₂=5 m. Section (2) d₂-50 cm.