Chapter 13, Problem 14TE

A spotlight that has a white-hot filament is coated so that it won’t transmit yellow light. What color is the emerging beam of light?

Solution

To determine: The color in the emerging beam of light.

Answer:

The color in the emerging beam of light is blue color.

Explanation:

The white light consists of seven colors (red, orange, yellow, blue, green, indigo, and violet).The primary colors are red, blue and yellow. The yellow-green is the most sensitive color to human eyes and whose wavelength is 555 nm.

Pure pigment of yellow color absorbs blue light while blue pigments consume yellow light, which is the combination of red and green, so when a white hot filament of spotlight is coated so that it won’t transmit yellow light, the blue color emerges from the light that emerges from it.

Conclusion:

Therefore, the color in the emerging beam of light is blue color.