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Q.

(A) : When a vector is rotated, its magnitude remains constant.
(R) : The magnitude of a vector is independent of the coordinate system.

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a

(A) is true but (R) is false

b

Both (A) and (R) are true and (R) is the correct explanation of (A)

c

Both (A) and (R) are false

d

Both (A) and (R) are true and (R) is not the correct explanation of (A)

answer is A.

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Detailed Solution

The magnitude of a vector does not depend on the coordinate system. So, if a coordinate system is changed or rotated, the magnitude remains same. 

Both (A) and (R) are true and (R) is the correct explanation of (A).

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