Question

8. Feng shines a thin beam of light onto a prism.

The light contains wavelengths of red, blue,
green, and yellow light. The diagram below
shows how the four colors of light exit the prism
at different angles.
Light in
Color 1
Color 2
Color 3
Color 4
Which of the wavelengths is color 1?
A. red light
B. blue light
C. green light
D. yellow light

Answer 1

The color of wavelengths that shown at color 1 is (A). Red light.

Introduction

Hi ! Here, I will help you to explain about the refraction of light. When a visible light is bent by water droplets or a prism lens, it will undergo refraction. Refraction will cause light that appears chromatic to be divided into seven spectra, namely: red, orange, yellow, green, blue, indigo, and purple. The order has been ordered from the wavelength, and the red color has the longest wavelength so that it is located at the top and looks the most curved.

Step-by-step explanation

Based on the image, the part of the light that will come out of "number one" is the red light. In accordance with the initial agreement, that red has the longest wavelength. With this feature, red is very easy to bend to "overshadow" the color spectrum with shorter wavelengths. As a comparison :

• The light that will come out from "number two" is a yellow light. Yellow light has a shorter wavelength than red.
• The light that will come out from "number three" is a green light. Green light has a shorter wavelength than yellow.
• The light that will come out from "number four" is a blue light. Blue light has a shorter wavelength than green.

Conclusion

The color of wavelengths that shown at color 1 is (A). Red light.