👉 Invariance is a concept in physics and mathematics that refers to the property of an object or system being invariant under changes in its parameters. In other words, if one variable (say x) is held constant while the rest are varied, the value of the remaining variables will remain unchanged. For example, consider two spheres with the same mass but different radii. If you change the radius of sphere A to 2 times that of sphere B, the total volume will increase by a factor of