Nigerian Scholars » » A light wave travels from air into a medium of refractive index 1.54. If the wavelength of the light in air is $$5.9\times10^{-7}$$...

# A light wave travels from air into a medium of refractive index 1.54. If the wavelength of the light in air is $$5.9\times10^{-7}$$...

### Question

A light wave travels from air into a medium of refractive index 1.54. If the wavelength of the light in air is $$5.9\times10^{-7}$$m, calculate its wavelength in the medium

### Options

A) $$2.5\times10^{-7}$$m

B) $$3.8\times10^{-7}$$m

C) $$4.6\times10^{-7}$$m

D) $$5.2\times10^{-7}$$m

E) $$6.1\times10^{-7}$$m

### Explanation:

n =$$\frac{wavelength\, in\, air}{wavelength\, in \,medium}= \frac{5.9\times10^{-7}}{1.54}= 3.8\times10^{-7}$$m

## Dicussion (1)

• n =$$\frac{wavelength\, in\, air}{wavelength\, in \,medium}= \frac{5.9\times10^{-7}}{1.54}= 3.8\times10^{-7}$$m