99 Percentile Qs Bank for JEE MainPhysicsMathematics in Physics
Which of the following is not true about vectors A → , B → and C → ?
Options
- AA → · A → B → · C → is a scalar value.
- BA → × B → · B → × C → is a scalar value.
- CA → × C → × B → × C → is a scalar value.
- DA → × B → × C → is a vector value.
Correct answer
C. A → × C → × B → × C → is a scalar value.
Step-by-step solution
Dot/Scalar product of two vectors gives scalar result. Cross/Vector product will give vector result. Case: A → · A → B → · C → Both left & right part will be a scalar value and hence its product will also be a scalar value. Case: A → × B → · B → × C → Both left and right part will be a vector, and then these two vectors will undergo dot product and the result will be a scalar value. Case: A → × C → × B → × C &#