GATE GEOLOGY

22. A vertical profile perpendicular to the crest line of an asymmetrical ripple is given in the figure. The calculated ripple index is………..

SOLUTION

Ripple index = (Wavelength) / (Height)

Wavelength = Stoss length + Lee length = (40 + 200) mm = 240 mm

Height = 60 mm

So, Ripple index = 240 mm / 60 mm = 4 (Answer)