JEE Main & Advanced Physics Vectors Sample Paper Topic Test- Vectors

  • question_answer
    A vector having magnitude 30 unit makes equal angles with each of X, Y and Z axes. The components of vector along each of X, Y and Z axes are

    A) \[10\sqrt{3}\] unit

    B) \[\frac{10}{\sqrt{3}}\] unit

    C) \[15\sqrt{3}\] unit

    D) 10 unit

    Correct Answer: A

    Solution :

    [a] \[{{A}_{x}}={{A}_{y}}={{A}_{z}}\] Now, \[A\,=\,\sqrt{A_{x}^{2}+\,A_{y}^{2}\,A_{z}^{2}}=\,\sqrt{3}\,{{A}_{x}}\] \[\therefore \]      \[{{A}_{x}}=\,\frac{A}{\sqrt{3}}\,=\frac{30}{\sqrt{3}}\,=\,10\sqrt{3}\]


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