Problem one: a beam of red light (656 nm) enters from air into the side of a glass and then into water. wavelength, c. and speed in both the glass and the water. find the a. the frequencies, b. the

Part a)

Part b)

Part c)

Explanation:

Part a)

frequency of light will not change with change in medium but it will depend on the source only

so here frequency of light will remain same in both water and glass and it will be same as that in air

Part b)

As we know that the refractive index of water is given as

so the wavelength in the water medium is given as

Similarly the refractive index of glass is given as

so the wavelength in the glass medium is given as

Part c)

Speed of the wave in water is given as

Speed of the wave in glass is given as