A spotlight is coated so that it won't transmit yellow light from its white-hot filament What color is the emerging beam of light?

Answer 1

The colour of the emerging beam of light will be white because yellow is a complimentary colour and every hue has a complimentary colour when added to it will result in white.

Answer 2

The emerging beam of light will be white without any yellow color since the coating filters out the yellow light emitted by the filament.