The wavelength of light is 589 nm. What is its wavelength in A∘ ?
Wavelength of light = 589 nm = 589 × 10-9 m = 5890 × 10-10 m = 5890 A∘
The wavelength of sodium light in air is 589 nm. (a) Find its frequency in air. (b) Find its wavelength in water (refractive index = 1.33). (c) Find its frequency in water. (d) Find its speed in water.
Monochromatic light of wavelength 589 nm is incident from air on a water surface. What are the wavelength, frequency and speed of (a) reflected, and (b) refracted light? Refractive index of water is 1.33.