BVP Medical BVP Medical Solved Paper-2001

  • question_answer
    The earths magnetic field at a certain place has a horizontal component 0.4 gauss where angle of dip is 60°. Then the total intensity of earth will be :

    A)  \[0.2\sqrt{3}\]gauss                      

    B)  0.8 gauss

    C)  0.2 gauss                            

    D) \[\frac{0.8}{\sqrt{3}}\]   gauss

    Correct Answer: B

    Solution :

                                           (Here, \[H=0.4\]gauss, \[\theta ={{60}^{o}}\]) Using the relation, \[H={{B}_{e}}\cos \theta \] or   \[{{B}_{e}}=\frac{H}{\cos \theta }\] so,  \[{{B}_{e}}=\frac{0.4}{\cos {{60}^{o}}}=0.8gauss\]


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