Answer:
The frequency of a red laser beam is [tex]4.47\times 10^{14}\ Hz[/tex].
Explanation:
It is given that,
Wavelength of red laser beam, [tex]\lambda=670\ nm=670\times 10^{-9}\ m[/tex]
We need to find the frequency of red laser beam. It can be calculated as :
[tex]f=\dfrac{c}{\lambda}[/tex]
[tex]f=\dfrac{3\times 10^8\ m/s}{670\times 10^{-9}\ m}[/tex]
[tex]f=4.47\times 10^{14}\ Hz[/tex]
So, the frequency of a red laser beam is [tex]4.47\times 10^{14}\ Hz[/tex]. Hence, this is the required solution.
