The graph between wave number (v) and angular frequency $(\omega)$ is

• Correct answer
  A

  
  
• B

  
  
• C

  
  
• D

  
  

Solution

Wave number $=$ $$ \bar{v}=\frac{1}{\text { wavelength } \lambda}=\frac{n}{v}=\frac{\omega}{2 \pi v} \text { or } \omega=(2 \pi v) \bar{v} $$
The equation is at the form $y=m x$. It passes through origin. The figure shows it.

Hence, the correct answer is option: 'A'.