Mark the correct alternative in each of the following:
If are any three mutually perpendicular vectors of equal magnitude a, then is equal to
We know that,
(i)
Since, they are mutually perpendicular vectors
===0 (ii)
And according to question
Using (i) and (ii) ,
Ans.
Smart Approach
In case of such mutually perpendicular vectors, assume vectors to be and verify your answer from options.