What is the condition for light to be completely polarized by reflection?

₹0.0

Question: What is the condition for light to be completely polarized by reflection?

Options:

Correct Answer: Angle of incidence equals Brewster\'s angle

Solution:

Light is completely polarized when it is reflected at Brewster\'s angle, which is given by θ_B = arctan(n2/n1).

What is the condition for light to be completely polarized by reflection?

What is the condition for light to be completely polarized by reflection?

Step 1: Understand what polarization means. Polarization is when light waves vibrate in a specific direction.
Step 2: Know that light can be polarized by reflection, which happens when light bounces off a surface.
Step 3: Learn about Brewster's angle. This is a special angle where light is reflected in a way that it becomes completely polarized.
Step 4: The formula for Brewster's angle (θ_B) is θ_B = arctan(n2/n1), where n2 is the refractive index of the material the light is reflecting off, and n1 is the refractive index of the medium the light is coming from.
Step 5: To find Brewster's angle, you need to calculate the arctangent of the ratio of the two refractive indices.

Brewster's Angle – The angle at which light is completely polarized upon reflection, determined by the refractive indices of the two media.
Polarization of Light – The orientation of light waves in a particular direction, which can occur through reflection, refraction, or scattering.