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The resultant of two vectors `vec(P)` and `vec(Q)` is `vec(R )`. If the magnitude of `vec(Q)` is doubled, the new resultant vector becomes perpendicular to `vec(P)`. Then, the magnitude of `vec(R )` is equal to

A

`P`

B

`(P+Q)`

C

`Q`

D

`(P-Q)`

Text Solution

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The correct Answer is:
C
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ERRORLESS -VECTORS-Exercise
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