Wavelenght of green light is

Which of the following is/are correct statements? I. The wavelength of red light is greater than the wavelength of green light. II. The wavelength of blue light is smaller than the wavelength of orange light III. The frequency of green light is greater than the frequency of blue light IV. The frequency of violet light is greater than the frequency of blue light

When the wavelenght of the light used is increased, the focal length of a spherical mirror

The wavelenght of a light is 450 nm. How phase it will differ for a path of 3 mm?

When the wavelenght of the light used is increased, the focal length of a spherical mirror

If wavelenght of light in air is 2400 xx 10_(-10) m, then what will be the wavelenght of light in glass (mu = 1.5) ?