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NEET Sample Paper NEET Sample Test Paper-11

  • question_answer
    A bullet of mass 2 gm is having a charge of\[2\,\mu C.\] Through what potential difference must it be accelerated, starting from rest, to acquire a speed of 10 m/s

    A)  5kV                             

    B)  50 kV

    C)  5 V                             

    D)  50 V

    Correct Answer: B

    Solution :

     By using \[\frac{1}{2}m{{v}^{2}}=QV\] Given,\[m=2g=2\times {{10}^{-3}}kg,v=10\,m/s,\] \[q=2\mu C=2\times {{\,}^{{{10}^{-6}}}}C\] Substituting the values in relation for V, we obtain \[V=\frac{2\times {{10}^{-3}}\times {{(10)}^{2}}}{2\times 2\times {{10}^{-6}}}\] \[=50\times {{10}^{3}}V=50\,kV\]


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