If the resultant of two vectors each of magnitude F is also of magnitude F, the angle between them will be:
Correct answer: D. 120°
- A. 90°
- B. 60°
- C. 30°
- D. 120°
Explanation
If the resultant of two vectors, each of magnitude F, is also of magnitude F, it means that the vectors are acting in the same direction. In other words, they are parallel to each other. Therefore, the correct option is (d) - 120°. (a) 90°, (b) 60°, and (c) 30° are incorrect because they do not result in a resultant magnitude equal to the individual vectors.
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About Addition of Vectors
Vector addition combines directed quantities using the head-to-tail, parallelogram and component methods. Work includes finding the resultant magnitude and direction for two or more vectors, resolving vectors into perpendicular components, and distinguishing vector addition from scalar addition, where direction has no role.
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