JEE Main & Advanced
Physics
Vectors
Question Bank
Multiplication of Vectors
question_answer
The vector \[\overrightarrow{P}=a\hat{i}+a\hat{j}+3\hat{k}\] and \[\overrightarrow{Q}=a\hat{i}-2\hat{j}-\hat{k}\] are perpendicular to each other. The positive value of a is [AFMC 2000; AIIMS 2002]