NEET Sample Paper NEET Sample Test Paper-21

  • question_answer A plane is inclined at an angle of \[30{}^\circ \] with the horizontal. The component \[\vec{A}-10\hat{k}\] perpendicular to the plane is (here z-direction is vertically upwards)

    A) \[5\sqrt{2}\]                            

    B) \[5\sqrt{3}\]                

    C)  5                    

    D)    2.5

    Correct Answer: B

    Solution :

    With reference to figure line OB is perpendicular to the plane. So the component of \[\vec{A}\]along OB is \[10\cos {{30}^{o}}\]i.e., \[5\sqrt{3}.\] Hence, the correction option is (b).


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