Understanding Snell's Law and Reflection

What is Snell's Law used to describe?

• The speed of sound in different materials.

• The reflection of light on a surface.

• The refraction of light at the interface between two different media.

• The color spectrum of visible light.

State the formula for Snell's Law.

• n1 * tan(θ1) = n2 * tan(θ2)

• n1 + sin(θ1) = n2 + sin(θ2)

• n1 / sin(θ1) = n2 / sin(θ2)

• n1 * sin(θ1) = n2 * sin(θ2)

What is the law of reflection?

• The angle of reflection is always zero degrees.

• The angle of incidence is always greater than the angle of reflection.

• The angle of incidence is half the angle of reflection.

• The angle of incidence is equal to the angle of reflection.

How does the angle of incidence relate to the angle of reflection?

• The angle of incidence is half of the angle of reflection.

• The angle of incidence and reflection are unrelated.

• The angle of incidence equals the angle of reflection.

• The angle of incidence is always greater than the angle of reflection.

What happens to light when it passes from a medium with a lower refractive index to a higher one?

• Light continues in a straight line without bending.

• Light bends away from the normal line.

• Light bends towards the normal line.

• Light speeds up as it enters the higher refractive index medium.

Define the term 'refractive index'.

• The refractive index is the measure of light intensity in a medium.

• The refractive index is the angle at which light enters a medium.

• The refractive index is the color of light in different mediums.

• The refractive index is the ratio of the speed of light in a vacuum to the speed of light in a medium.

What is total internal reflection?

• Total internal reflection is the bending of light as it passes through different media.

• Total internal reflection only happens at a 90-degree angle.

• Total internal reflection occurs when light passes from a less dense to a more dense medium.

• Total internal reflection is the phenomenon where a wave is completely reflected within a medium when it hits the boundary with a less dense medium at an angle greater than the critical angle.

How can Snell's Law be applied in optical devices?

• Snell's Law helps in determining the temperature of optical devices.

• Snell's Law is applied to calculate the weight of lenses.

• Snell's Law is used to measure the speed of sound in water.

• Snell's Law is applied in optical devices to design lenses and prisms for controlling light paths.

What is the significance of the critical angle in refraction?

• The critical angle is irrelevant in optical fibers.

• The critical angle is the maximum angle of incidence for refraction.

• The critical angle only applies to convex lenses.

• The critical angle determines the threshold for total internal reflection in refraction.

Explain how the law of reflection applies to mirrors.

• The law of reflection states that the angle of incidence equals the angle of reflection, which allows mirrors to reflect light and form images.

• Mirrors absorb all light instead of reflecting it.

• The law of reflection states that light cannot be reflected by mirrors.

• Mirrors only reflect light at a 90-degree angle.