Why is the dimension of one fundamental (base) quantity interms of any other fundamental (base) quantity is always zero.

Explanation

To understand why the dimension of one fundamental (base) quantity in terms of any other fundamental (base) quantity is always zero, we can break down the explanation into clear steps:

### Step-by-Step Solution:

1. **Definition of Fundamental Quantities**:
- Fundamental quantities are the basic physical quantities that cannot be expressed in terms of other quantities. Examples include mass (M), length (L), time (T), electric current (I), temperature (Θ), amount of substance (N), and luminous intensity (J).

2. **Independence of Fundamental Quantities**:
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