Ncert Exercises & Solutions

Which one of the following statements is true?

1. A scalar quantity is the one that is conserved in a process.

2. A scalar quantity is one that can never take negative values.

3. A scalar quantity is one that does not vary from one point to another in space.

4. A scalar quantity has the same value for observers with different orientations of the axes.

(d) Hint: Recall the definition of scalar and vector quantities.

A scalar quantity is independent of direction hence has the same value for observers with different orientations of the axes.