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NEET Sample Paper NEET Sample Test Paper-49

  • question_answer
    The magnitude of the X and Y components of \[\overrightarrow{A}\] are 7 and 6. Also the magnitudes of the X and Y components of \[\overrightarrow{A}\,\,+\,\,\overrightarrow{B}\] are 11 and 9 respectively. What is the magnitude of\[\overrightarrow{B}\]?

    A) 5                                 

    B) 6     

    C) 8                                 

    D) 9

    Correct Answer: A

    Solution :

    \[{{A}_{x}}=\text{ }7,\text{ }{{A}_{y}}=\text{ }6\] \[{{R}_{x}}=\,\,A,\,\,+\,\,{{B}_{x}}=11\] \[{{R}_{y}}=\text{ }{{A}_{y}}+\text{ }{{B}_{y}}=\text{ }9\]


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