11th Class Physics Motion in a Straight Line / सरल रेखा में गति Question Bank Motion In A Plane Conceptual Problems

  • question_answer
    What is the dot product of two dissimilar unit vectors? Or Calculate the value of \[\hat{i}.\hat{j}\].  

    Answer:

                    Zero. For example, \[\hat{i}.\hat{j}=(1)(1)\cos {{90}^{\circ }}=0\]


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