Question

How many dimensions of the world are there?

(a) 7

(b) 3

(c) 2

(d) 4

I got this question by my school principal while I was bunking the class.

I'm obligated to ask this question of Dimensions of a Physical Quantity topic in section Advanced Engineering Materials of Engineering Physics II

Answer 1

Correct answer is (a) 7

The best I can explain: All the derived quantities can be expressed in terms of some combination of the seven fundamental or base quantities. We call these seven fundamental quantities as the seven dimensions of the world.