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Motion in A Plane question

2004 · Q141
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Motion in A Plane question

2004 · Q141

NEETPhysicsMotion in A PlaneMCQ+4 / −1
If ∣A→×B→∣=3A→.B→\left| {\overrightarrow A \times \overrightarrow B } \right| = \sqrt 3 \overrightarrow A .\overrightarrow B​A×B​=3​A.B then the value of ∣A→+B→∣\left| {\overrightarrow A + \overrightarrow B } \right|​A+B​ is
  1. A
    (A2 + b2 + AB)1/2
  2. B
    (A2+B2+AB3)1/2{\left( {{A^2} + {B^2} + {{AB} \over {\sqrt 3 }}} \right)^{1/2}}(A2+B2+3​AB​)1/2
  3. C
    A + B
  4. D
    (A2 + B2 + 3{\sqrt 3 }3​AB)1/2.
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