A) \[5\times {{10}^{-7}}m\]
B) \[4\times {{10}^{-8}}c{{m}^{-1}}\]
C) \[2\times {{10}^{-7}}{{m}^{-1}}\]
D) \[4\times {{10}^{4}}c{{m}^{-1}}\]
Correct Answer: D
Solution :
Frequency \[\nu =12\times {{10}^{14}}{{s}^{-1}}\] and velocity of light \[c=3\times {{10}^{10}}cm\,{{s}^{-1}}\]. We know that the wave number \[\overline{\nu }=\frac{v}{c}=\frac{12\times {{10}^{14}}}{3\times {{10}^{10}}}=4\times {{10}^{4}}c{{m}^{-1}}\]
You need to login to perform this action.
You will be redirected in
3 sec
