The vector P̅ = aî + aĵ + 3k̂ and Q̅ = aî - 2ĵ - 1k̂ are perpendicular to each other. The positive value of ais - VgyanHub

Question:

30. The vector P̅ = aî + aĵ + 3k̂ and Q̅ = aî – 2ĵ – 1k̂ are perpendicular to each other. The positive value of ais

Options :

a) 3
b) 4
c) 9
d) 13

Answer :

a) 3

Answer Steps :

Solution :-

Step1 :-

Step2 :-

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