If the wavelength of a monochromatic source is 600 nm in vacuum, what is the wavelength from the same source when it passes through a liquid where the speed of light is 2.00 ´ 108 m/s? (c = 3.00 ´ 108 m/s)

In vacuum, the wave has a wavelength of

and it travels at speed of light

So its frequency is


The frequency of an electromagnetic wave does not change when moving from a medium to another, and since the new speed of the wave in the liquid is

we can find its new wavelength when moving in the liquid:

Ifound this on google “your outer ear collects sound waves and reflects them into a tiny tube called the ear canal. at the end of the ear canal is a thin, skin-like membrane stretched tightly over the opening, called the eardrum.” i hope this you for what your looking for

The correct answer is c