CET Karnataka Medical CET - Karnataka Medical Solved Paper-2010

  • question_answer
     \[{{v}_{1}}\]is the frequency of the series limit of Lyman series, \[{{v}_{2}}\]is the frequency of the first line of Lyman series and \[{{v}_{3}}\]is the frequency of the series limit of the Balmer series. Then

    A)  \[{{v}_{1}}-{{v}_{2}}={{v}_{3}}\]

    B)  \[{{v}_{1}}={{v}_{2}}-{{v}_{3}}\]

    C)  \[\frac{1}{{{v}_{2}}}=\frac{1}{{{v}_{1}}}+\frac{1}{{{v}_{3}}}\]

    D)  \[\frac{1}{{{v}_{1}}}=\frac{1}{{{v}_{1}}}+\frac{1}{{{v}_{3}}}\]

    Correct Answer: A

    Solution :

    Frequency,\[v=RC\left[ \frac{1}{n_{1}^{2}}-\frac{1}{n_{2}^{2}} \right]\] \[{{v}_{1}}=RC\left[ 1-\frac{1}{\infty } \right]=RC\] \[{{v}_{2}}=RC\left[ 1-\frac{1}{4} \right]=\frac{3}{4}RC\] \[{{v}_{3}}=RC\left[ \frac{1}{4}-\frac{1}{\infty } \right]=\frac{RC}{4}\]\[\Rightarrow \]\[{{v}_{1}}-{{v}_{2}}={{v}_{3}}\]


You need to login to perform this action.
You will be redirected in 3 sec spinner