Question

16. Two physical quantities A and B have different dimensions. Which mathematical operation given below is
physically possible?
(2) A(1 + B)
(1)
$\sqrt{ab}$

(4) A + B
(3) A - B​

Answer 1

Answer:

Explanation:

Hope it helps

Root of ab is possible physically because multiplication and division of two quantities can be done . For example : velocity = displacement /time which have different dimensions that are M for length and T for time respectively. Whereas addition and subtraction of similar quantities can only be done. For example 5m + 6m = 11m where metre is unit of length and has to mention M1L0T0