Physics · JEE | SYSTEMS OF PARTICLES AND ROTATIONAL MOTION

Two vectors are given by \( \mathbf{a} = 3\hat{i} - 4\hat{j} + 5\hat{k} \) and \( \mathbf{b} = -2\hat{i} + \hat{j} + 3\hat{k} \). What is their scalar product \( \mathbf{a} \cdot \mathbf{b} \)?

1. A
   -25
2. B
   25
3. C
   15
4. D
   -15