Green
Light, whatever the wavelength, does not need a medium in order to radiate.
When light travels from one medium to another, its wavelength may change. This is known as refraction. The speed and direction of light may also change depending on the difference in refractive indexes between the two medium.
When a light wave enters a medium where the speed of light is slower (from dense to rare medium), the frequency remains the same but the wavelength decreases. This is because the speed of light is inversely proportional to the wavelength.
The wavelength of light is slightly shorter when passing through a medium due to the slowing down of light in the medium. The wavefronts are displaced closer together, resulting in a shorter wavelength. This phenomenon is known as wavelength compression.
The speed of light is not affected by the density of the medium. Its the path of the light that is affected . Phenomenon like reflection or refraction take place when the light goes to different medium
A low tone with a medium volume.
The denser an object is, the slower a wave will travel through it because the wave will interact (collide!) with more molecules. Each collision will serve to slow down the wave of light. Therefore, the wavelength will increase, becoming longer.
Ultraviolet light has a shorter wavelength than green light.
The equation relating the velocity, wavelength and frequency of an electromagnetic wave is given byv=f λwhere v - velocity of the em wavef - frequency of the em wave andλ - wavelength of the em wave------------------------------------------------------------------------------------------------It is so important to know that velocity of light depends on the nature of the medium and does not depend on the wavelength.
The wavelength of light changes when it travels from one optical medium to another due to a phenomenon called refraction. The speed of light is different in different media, causing the wavelength to either increase or decrease as it moves through the new medium. This change in wavelength is responsible for effects like the bending of light rays.
When light enters a denser medium, its speed decreases due to interactions with the medium's particles. This change in speed causes the frequency of the light to remain constant but the wavelength to decrease, following the equation v = fλ, where v is the speed of light, f is the frequency, and λ is the wavelength.
The speed of light in a medium changes when the medium of propagation changes. The wavelength and direction of light may also change depending on the medium, due to factors like refraction.