If λ\(\vec { a } \) + 2λ\(\vec { j } \) + 2λ\(\vec { k } \) is a unit vector then the value of λ is ………………
A. \(\frac{1}{3}\)
B. \(\frac{1}{4}\)
C. \(\frac{1}{9}\)
D. \(\frac{1}{2}\)
Answer:A
If λ\(\vec { a } \) + 2λ\(\vec { j } \) + 2λ\(\vec { k } \) is a unit vector then the value of λ is ………………
A. \(\frac{1}{3}\) B. \(\frac{1}{4}\) C. \(\frac{1}{9}\) D. \(\frac{1}{2}\)