A vector A when added to the sum of the vectors (  ^ − 2  ^ + 2 k ^ ) and ( − 2  ^ +  ^ − k ^ ) gives a unit vector along y -axis. The magnitude of the vector A is

Question

A vector A when added to the sum of the vectors (  ^ − 2  ^ ​ + 2 k ^ ) and ( − 2  ^ +  ^ ​ − k ^ ) gives a unit vector along y -axis. The magnitude of the vector A is

TestHub · Accepted Answer

A + (  ^ − 2  ^ ​ + 2 k ^ ) + ( − 2  ^ +  ^ ​ − k ^ ) = unit vector along Y axis ​ j ^ ​ ​ A =  ^ + 2  ^ ​ − k ^ ∣ A ∣ = 6 ​

Physics - Vectors Question with Solution | TestHub

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