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BVP Medical BVP Medical Solved Paper-2015

  • question_answer
    If frequency of \[mg\,[1+{{(\eta /L)}^{2}}]\] X-ray emitted from element with \[\frac{mg}{2}\,[1+{{(\eta /L)}^{2}}]\] is \[4mg\,[1+{{(\eta /L)}^{2}}]\], then frequency of , \[\frac{100}{3}cm\] X-rays emitted from element with \[100cm\] would be

    A)  \[\frac{200}{3}cm\]

    B)  \[\frac{50}{3}cm\]

    C)  \[T=2{{T}_{0}}+\eta {{V}^{2}}\]

    D)  \[\eta \]

    Correct Answer: C

    Solution :

                    (c.)As we know that \[\sqrt{v}=a(N-1)\]                 \[\Rightarrow \]               \[\sqrt{{{v}_{1}}}=a({{N}_{1}}-1)\]                 ??.(i)                 Again     \[\sqrt{{{v}_{2}}}=a({{N}_{2}}-1)\]                ??(ii)                 From Eqs.  (i) and (ii)                                 \[\frac{\sqrt{{{v}_{1}}}}{{{N}_{1}}}=\frac{\sqrt{{{v}_{2}}}}{{{N}_{2}}}\]                 \[\Rightarrow \]               \[{{v}_{2}}={{\left[ \frac{{{N}_{2}}}{{{N}_{1}}}(\sqrt{{{v}_{1}}}) \right]}^{2}}={{\left( \frac{{{N}_{2}}}{{{N}_{1}}} \right)}^{2}}{{v}_{1}}\]


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