<prompt> White colour visionPerception of white light is due to: September 2008Stimulation of red cones more than blue or greenStimulation of blue cones more than red or greenStimulation of green cones more than blue or redStimulation of red, blue and green cones equally  <response>: Ans. D: Stimulation of red, blue and green cones equallyThere is no single wavelength corresponding to white colour. Perception of white can be achieved by equally stimulating the red, green and blue cones. 