For similarity, in addition to models being geometrically similar to prototype, the following in both cases should also be equal
A
Ratio of inertial force to force due to viscosity
B
Ratio of inertial force to force due to gravitation
C
Ratio of inertial force to force due to surface tension
D
All the four ratios of inertial force to force due to viscosity, gravitation, surface tension, and elasticity
Correct Answer: All the four ratios of inertial force to force due to viscosity, gravitation, surface tension, and elasticity