If \(\vec{a}\) is a non-zero vector of magnitude ‘a’ and λ a non-zero scalar, then λ \(\vec{a}\) is unit vector if : (1)
A. λ = 1
B. λ = – 1
C. a = |λ|
D. a = 1/|λ|
Answer:D
If \(\vec{a}\) is a non-zero vector of magnitude ‘a’ and λ a non-zero scalar, then λ \(\vec{a}\) is unit vector if : (1)
A. λ = 1 B. λ = – 1 C. a = |λ| D. a = 1/|λ|