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Resultant of two vectors of magnitudes P...

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

A

`30^(@)`

B

`90^(@)`

C

`60^(@)`

D

`120^(@)`

Text Solution

Verified by Experts

The correct Answer is:
B
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Knowledge Check

  • Resultant of two vectors of magnitudes P and Q is of magnitude .Q.. If the magnitude of vec(Q) is doubled now the angle made by new resultant with vec(P) is

    A
    `30^(@)`
    B
    `90^(@)`
    C
    `60^(@)`
    D
    `120^(@)`

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

    A
    `30^(0)`
    B
    `90^(0)`
    C
    `60^(0)`
    D
    `120^(0)`

  • 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
    `(P^(2)-Q)/(2PQ)`
    B
    `2(P+Q)/(P-Q)`
    C
    Q
    D
    `P/Q`

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