Question

What is the frequency of red colour of wavelength 8000A​

Answer 1

Given:

The wavelength of red colour = $8000$ Å

To find:

The frequency of red colour

Formula used:

$v = c/$λ

Where $v$ is the frequency

$c$ is the speed of light, $3$ × $10^{8}$ $m/s$

λ is the wavelength

Explanation:

$v =$  $\frac{3*10^{8} }{8000*10^{-10} }$

$v$ =  $\frac{3*10^{8} }{8*10^{3}*10^{-10} }$

$v$ =  $0.375$ × $10^{15}$

$v$ =   $3.75$ × $10^{14}$

Answer:

The frequency of red colour of the wavelength of $8000$ Å is $3.75$ × $10^{14}$