I searched for the images of refraction on google images and i saw an image where a laser light was incident on a regular glass slab. Bending of light was clearly seen in the picture. According to Snell's law the refractive index of any particular medium is the ratio of angle of incidence to angle of refraction OR velocity of light in air to velocity of light in the medium. If we substitute all the given values in the formula, then the velocity of light in the glass slab comes out to be 2 X 10^8 m/s. As per the law, the frequency of the light remains constant. Now, we have the relation,
v = n X λ...(where 'n' is the frequency of light and 'λ' is wavelength of light)
If the frequency of the light remains constant, then velocity is directly proportional to the wavelength of light. So, if the velocity reduces in the glass slab then the wavelength must also reduce and so the color of the light must change in the glass slab. But on the contrary the color is not changing. So, what happens exactly in the glass slab? What is the phenomenon?
https://chemicalparadigms.wikispaces...3/65018453.JPG
please follow the above link to view the image.
Posted By-
Devendra s. Chavan
v = n X λ...(where 'n' is the frequency of light and 'λ' is wavelength of light)
If the frequency of the light remains constant, then velocity is directly proportional to the wavelength of light. So, if the velocity reduces in the glass slab then the wavelength must also reduce and so the color of the light must change in the glass slab. But on the contrary the color is not changing. So, what happens exactly in the glass slab? What is the phenomenon?
https://chemicalparadigms.wikispaces...3/65018453.JPG
please follow the above link to view the image.
Posted By-
Devendra s. Chavan