Kinematics Question 20

Question: What vector must be added to the two vectors i^2j^+2k^ and 2i^+j^k^, so that the resultant may be a unit vector along x-axis [BHU 1990]

Options:

A) 2i^+j^k^

B) 2i^+j^k^

C) 2i^j^+k^

D) 2i^j^k^

Show Answer

Answer:

Correct Answer: B

Solution:

(i^2j^+2k^)+(2i^+j^k^)+R=i

Required vector R = 2i^+j^k^



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