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NTSE Sample Paper NTSE SAT Practice Test-13

  • question_answer
    When a \[{{U}^{238}}\]nucleus decays after being at rest an \[\alpha \]-particle with speed f is given out, the velocity of recoil is

    A) \[\frac{\upsilon }{4}\]                            

    B) \[\frac{-4\upsilon }{234}\]

    C) \[\frac{-4\upsilon }{238}\]                      

    D) \[\frac{4\upsilon }{234}\]

    Correct Answer: B

    Solution :

    [b] \[0=234\,\,\,V+4\,\,v\,\,or\,\,V\,=\frac{-4v}{234}\]


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