Question

define dimensional analysis?​

Answer 1

Answer:

analysis using the fact that physical quantities added to or equated with each other must be expressed in terms of the same fundamental quantities (such as mass, length, or time) for inferences to be made about the relations between them.

Answer 2

here is your answer,

While calculatin while calculating there is a need to convert units from one system to the other.the method used to accomplish these this is called factor level method or units of factor method.

I hope it will helps you.