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Question
Which of the sets given below may represent the magnitudes of three vectors adding to zero?
Options
2, 4, 8
4, 8, 16
1, 2, 1
0.5, 1, 2
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Solution
1, 2, 1
1,2 and 1 may represent the magnitudes of three vectors adding to zero. For example one of the vector of length 1 should make an angle of \[{135}^\circ\] with x axis and the other vector of length 1 makes an angle of \[{225}^\circ\] with x axis. The third vector of length 2 should lie along x axis.
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