Question

A: When we change the unit of measurement of a quantity, its numerical value changes.
R: Smaller the unit of measurement, smaller is its numerical value.

• A. A and R are correct and R is correct explanation of A
• B. A and R are correct and R is correct not correct explanation A
• C. A is true and R is false
• D. A is false and R is true

Answer 1

The correct option is C A is true and R is false

The value of given quantity $nu$ must be constant.
where

($n$ $\to$ numerical values)
($u$ $\to$ units )

Thus changing the unit of measurement changes its numerical value so that the $nu$ remains constant.

Thus A is correct.
Also, we get $n\propto \frac{1}{u}$, hence smaller the unit of measurement, greater is its numerical value.
Hence, R is false.