JEE Main & Advanced
Mathematics
Vector Algebra
Question Bank
Numerical Value Type Questions - Vector
question_answer
Let \[\left| \,\,\vec{a}\,\, \right|=1\] and \[\left| \,\,\vec{b}\,\, \right|=3.\] If \[\vec{a}+\lambda \vec{b}\] and \[\vec{a}-\lambda \vec{b}\] are mutually perpendicular vectors, then find value of \[\left| \lambda \right|.\]