A) \[1.09\times {{10}^{7}}\text{per}\,\,m\]
B) \[1.09\times {{10}^{8}}\text{per}\,\,m\]
C) \[1.09\times {{10}^{9}}\text{per}\,\,m\]
D) \[1.09\times {{10}^{5}}\text{per}\,\,m\]
Correct Answer: A
Solution :
\[\frac{1}{\lambda }=R\left[ \frac{1}{4}-\frac{1}{9} \right]=\frac{5R}{36}\]` \[\therefore \] \[R=\frac{36}{5\lambda }=\frac{36}{5\times 6563\times {{10}^{-10}}}\] \[=1.09\times {{10}^{7}}{{m}^{-1}}\]
You need to login to perform this action.
You will be redirected in
3 sec
