The correct answer is: B. The wavelength of red light is longer.
Red light has a longer wavelength than blue light. This means that red light has a lower frequency and a lower energy than blue light. Red light is also scattered less than blue light, which is why the sky appears blue.
A. Blue light has a higher speed of propagation.
This is incorrect. The speed of light is the same for all colors of light.
C. Red light has a higher intensity.
This is incorrect. The intensity of light is a measure of the amount of energy per unit area. The intensity of red light is not necessarily higher than the intensity of blue light.
D. Red and blue light have different directions of polarization.
This is incorrect. Polarization is a property of light waves that describes the direction of their electric field. All light waves, regardless of color, can be polarized in any direction.