The surface temperature of the naked-eye star Capella (in constellation Auriga) is approximately 4,700 degrees Celsius. a) What is the peak frequency (in hertz) and wavelength (in metres AND nanometres) of Capella’s emitted light? b) If you were to look at Capella in the night sky, what colour would you expect it to appear? Why would you expect this colour?

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Nature of light

Light is transverse and electromagnetic radiation that exhibits the properties of a wave as well as a particle. For this reason, light is said to have a “dual nature.”