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The resultant of two vectors vecP and ve...

The resultant of two vectors `vecP` and `vecQ` is `vecR`. If the magnitude of `vecQ` is doubled, the new resultant becomes perpendicular to `vecP`, then the magnitude of `vecR` is

A

`30^(@)`

B

`90^(@)`

C

`60^(@)`

D

`120^(@)`

Text Solution

Verified by Experts

The correct Answer is:
B
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