The relationship between the length scale ratio (Lr) and

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The relationship between the length scale ratio (L_r) and the velocity scale ratio (V_r) in hydraulic models, in which Froude dynamic similarity is maintained, is:

1. V_r = L_r
2. L_r = √V_r
3. V_r = L_r^1.5
4. V_r = √L_r

Correct Option: D

Froude's number =	V
	√gy

∴ V ∝ √y
y ∝ L_r
∴ V ∝ √L_r