Question

In glass, light travels with a speed of 2.0 × 10^8 m/s. Light with a frequency of 4.4 × 10^14 Hz moves through the glass. What is the wavelength of the lighta. 4.5 x 10^-7mb. 8.8 x 10^22mc. 2.2 x 10^6md. 1.1 x 10^-23m

Answer 1

Given

Light tavels with a speed

$v=2\times10^8\text{ m/s}$

Frequency is

$n=4.4\times10^{14}\text{ Hz}$

To find

What is the wavelength of the light?

Explanation

We know,

$\begin{gathered} v=n\lambda \\ \Rightarrow2\times10^8=4.4\times10^{14}\lambda \\ \Rightarrow\lambda=4.5\times10^{-7}m \end{gathered}$

Conclusion

The wavelength is

$a.\text{ }4.5\times10^{-7}m$