Understanding Light Refraction

What is Snell's Law and how is it mathematically expressed?

• Snell's Law is mathematically expressed as n1 * sin(θ1) = n2 * sin(θ2), where n1 and n2 are the refractive indices of the two media, and θ1 and θ2 are the angles of incidence and refraction, respectively.

• n1 / sin(θ1) = n2 / sin(θ2)

• sin(θ1) + sin(θ2) = n1 + n2

• n1 * θ1 = n2 * θ2

Explain the concept of lateral displacement in the context of a glass slab.

• Lateral displacement is the total internal reflection occurring at the glass-air interface.

• Lateral displacement refers to the bending of light as it enters a glass slab.

• Lateral displacement is the angle at which light is refracted in a glass slab.

• Lateral displacement is the shift in the path of light as it passes through a glass slab, resulting in the emergent ray being offset from the incident ray.

What are some practical applications of refraction in everyday life?

• Sunglasses

• Flashlights

• Magnifying glasses

• Eyeglasses, cameras, optical fibers, microscopes, and telescopes.

How does the angle of incidence relate to the angle of refraction according to Snell's Law?

• The angle of incidence is always equal to the angle of refraction.

• Snell's Law states that the angle of incidence is half of the angle of refraction.

• The angle of incidence has no effect on the angle of refraction.

• The angle of incidence is related to the angle of refraction by Snell's Law, which states n1 * sin(θ1) = n2 * sin(θ2).

Describe how a glass slab can be used to demonstrate the principles of refraction and lateral displacement.

• A glass slab reflects light without any displacement.

• A glass slab absorbs all light without bending it.

• A glass slab creates a prism effect without showing refraction.

• A glass slab demonstrates refraction by bending light at its surfaces and shows lateral displacement by illustrating the shift in the light's path.