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Question

The magnitude of the resultant of (A+B) and (A – B) is

A
2A
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B
2B
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C
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D
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Solution

The correct option is A 2A
The resultant R of vectors (A + B) and (A – B) is
R = (A + B) + (A – B) = 2A
The magnitude of the resultant = 2A. Hence the correct choice is (a)

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