Light cannot be linearly polarized by:
transmission
reflection
diffraction
diffraction
To determine which statement is correct, we need to understand the properties of polarized light and how it interacts with different mediums.
Light can be polarized, which means the electric and magnetic fields oscillate in a specific direction. When light travels through a medium, such as air, it can interact with the atoms or molecules in that medium. This interaction can cause the light waves to align in a particular direction, resulting in polarization.
Transmission: Light can be linearly polarized by transmission. This means that when light passes through a polarizing filter, only the electric field oscillating in a particular direction is allowed to pass through, while the other components are blocked. Polarizing filters are commonly used in applications like sunglasses to reduce glare.
Reflection: Light can also be linearly polarized by reflection. When light reflects off a surface, such as water or glass, the reflected light becomes partially polarized. The angle of incidence can determine the degree of polarization, with polarization being strongest at certain angles known as Brewster's angle.
Diffraction: Diffraction refers to the bending or spreading of light waves when they encounter an obstacle, such as an edge or a slit. Diffraction can affect the intensity and direction of light, but it does not change the polarization state of light. Therefore, light can still be linearly polarized after undergoing diffraction.
Therefore, based on our understanding, the correct answer is that light can be linearly polarized by transmission, reflection, and diffraction, but not by diffraction.