Resultant of two vectors of magnitude `P` and `Q` is of magnitude `Q`.If the magnitude of `vecQ` is doubled now the angle made by new resultant with `vecP` is

Resultant of two vectors of magnitudes P and Q is of magnitude 'Q'. If the magnitude of vecQ is doubled now the angle made by new resultant with vecP is

Resultant of two vectors of magnitude P and Q is of magnitude 'Q'.If the magnitude of Q is doubled now the angle made by new resultant with P is

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