746PhysicsMedium
Which one is a unit vector ?
ABoth B and C are correct
B??3 / 3 i^ + ??3 / 3 j^ + ??3 / 3 k^
C??3 i^ + ??3 j^ + ??3 k^
D1/??3 i^ + 1/??3 j^ +1/ ??3 k^
Correct answer
A. Both B and C are correct
Explanation
Both B and C are correct is the correct answer. Review the question and compare it with the other choices to remember this fact for future exams.