Atoms And Nuclei Question 105
Question: The wavelength of yellow line of sodium is 5896 Å. Its wave number will be [MP PET 2001]
Options:
A) 50883 × 1010 per second
B) 16961 per cm
C) 17581 per cm
D) 50883 per cm
Show Answer
Answer:
Correct Answer: B
Solution:
Wave number $ \bar{\nu }=\frac{1}{\lambda } $ $ =\frac{1}{5896\times {{10}^{-8}}}=16961 $ per cm
