Which of the following is a unit vector parallel to the vector a = 2î − ĵ + 2k̂? A. (2î − ĵ + 2k̂)/3 B. (2î − ĵ + 2k̂)/4 C. (î − ĵ + k̂)/√3 D. (2î + ĵ − 2k̂)/3 Answer: A) (2î − ĵ + 2k̂)/3 Explanation: Magnitude of a = √(2² + (−1)² + 2²) = √9 = 3. Unit vector = a / |a| = (2î − ĵ + 2k̂)/3.

imo class 12 vector algebra

Which of the following is a unit vector parallel to the vector a = 2î − ĵ + 2k̂?

VAVidaara Admin Asked 6d ago 0 views 0 answers

Which of the following is a unit vector parallel to the vector a = 2î − ĵ + 2k̂?

Answer: A) (2î − ĵ + 2k̂)/3

Explanation: Magnitude of a = √(2² + (−1)² + 2²) = √9 = 3. Unit vector = a / |a| = (2î − ĵ + 2k̂)/3.