Understanding Refraction and Its Laws

What is Snell's Law and how is it formulated?

• Snell's Law is formulated as n1 * sin(θ1) = n2 * sin(θ2).

• n1 * tan(θ1) = n2 * tan(θ2)

• n1 + sin(θ1) = n2 + sin(θ2)

• n1 / sin(θ1) = n2 / sin(θ2)

Explain the concept of total internal reflection.

• Total internal reflection occurs when light passes through a medium without any reflection.

• Total internal reflection is the bending of light as it passes from one medium to another.

• Total internal reflection only happens in gases, not in liquids or solids.

• Total internal reflection is the phenomenon where light is completely reflected at the boundary of two media when the angle of incidence exceeds the critical angle.

What is the formula for calculating the refractive index of a medium?

• n = c / v

• n = v / c

• n = c * v

• n = c + v

Explain how rainbows are formed.

• Rainbows are formed by the scattering of light in the atmosphere.

• Rainbows are formed through the refraction of sunlight in raindrops, which bends and separates the light into a spectrum of colors.

• Rainbows occur when light is absorbed by clouds.

• Rainbows are created by the reflection of light in mirrors.

What is the difference between real and virtual images in terms of refraction?

• Real images can be projected; virtual images cannot.

• Real images are formed by reflection only.

• Virtual images can be projected onto a screen.

• Real images are always larger than virtual images.