Which of the following Statement is true?

Options

A. When the coordiante axes are translated the component of a vector in a plane changes.
B. When the coording axces are rotated though some angle components of the vector change but vector 's magnitude remain constant.
C. Sum of a and b is R If the magnitude of a alone is increased angle between b and R decreases.
D. The cross product of `3hati and 4hatj `is 12.

Answer

B

Explanation

(b) when the coorinate axes are rotated only the components of the vector change wherees magnitude remains constant.