Vectors 1 Question 15

16. The number of vectors of unit length perpendicular to vectors a=(1,1,0) and b=(0,1,1) is

(1987, 2M)

(a) one

(b) two

(c) three

(d) infinite

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Answer:

Correct Answer: 16. (2:1)

Solution:

  1. A vector perpendicular to a and b is ±(a×b)|a×b|.


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