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.

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