State about the correctness or otherwise of the following two statements.
i) A physical quanity can have dimensions but no units.
ii) A physical quantity can have units but no dimensions.

Explanation

To analyze the correctness of the two statements regarding physical quantities, we can break down the evaluation into clear steps.

### Step-by-Step Solution:

1. **Understanding the First Statement**:
- The first statement claims that "A physical quantity can have dimensions but no units."
- Dimensions refer to the physical nature of a quantity, expressed in terms of fundamental quantities (like mass, length, time, etc.).
- If a quantity has dimensions, it is inherently linked to the fundamental physical quantities, which means it must also have a corresponding unit of measurement.
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