Questions
Assertion (A) : When a vector is rotated, its magnitude remains constant
Reason (R) : The magnitude of a vector is independent of the coordinate system
detailed solution
Correct option is A
B, C, D are not correct because A vector has both directions & magnitude,
when a vector is rotated its magnitude remains constant and independent
of coordinate system.
The direction of vector is expressed in terms of an angle without any reference then the angle
is considered with positive x – axis in anticlock wise direction.
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