A) \[5a\]
B) \[6a\]
C) \[10a\]
D) \[9a\]
E) \[7a\]
Correct Answer: A
Solution :
Suppose that the sides of cube are unity and unit vector along OA, OB and OC are \[\hat{i},\text{ }\hat{j},\text{ }\hat{k}\] respectively. OR, OS, OT are diagonals of cube having corresponding vector a, 2a and 3a (Magnitude) respectively.You need to login to perform this action.
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