Snell's Law Practice

What is Snell's Law?

• It describes the relationship between the angles of incidence and refraction when light passes through different media.

• It explains the reflection of light from a mirror.

• It defines the speed of light in a vacuum.

• It is used to calculate the energy of a photon.

Which of the following equations represents Snell's Law?

Tags

NGSS.HS-PS4-1

If the angle of incidence is 30 degrees and the angle of refraction is 20 degrees, what is the refractive index of the second medium if the first medium is air?

• 1.5

• 1.0

• 0.67

• 2.0

A light ray passes from water (refractive index = 1.33) to glass (refractive index = 1.5). What happens to the speed of light as it enters the glass?

• It decreases.

• It increases.

• It remains the same.

• It becomes zero.

Tags

NGSS.HS-PS4-1

In an experiment, a light ray is incident at an angle of 45 degrees on a glass slab. If the refractive index of glass is 1.5, what is the angle of refraction?

• 28.1 degrees

• 45 degrees

• 60 degrees

• 90 degrees

Which of the following is a real-world application of Snell's Law?

• Designing lenses for eyeglasses.

• Calculating the speed of sound.

• Measuring temperature changes.

• Determining the mass of an object.

Tags

NGSS.HS-PS4-1

NGSS.HS-PS4-3

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

• It bends away from the normal.

• It bends towards the normal.

• It does not bend.

• It reflects back into the original medium.

Tags

NGSS.MS-PS4-2

If a light ray travels from air into a medium with a refractive index of 2, what is the angle of refraction if the angle of incidence is 60 degrees?

• 30 degrees

• 45 degrees

• 60 degrees

• 90 degrees

Why does a straw appear bent when placed in a glass of water?

• Due to refraction of light.

• Due to reflection of light.

• Due to diffraction of light.

• Due to absorption of light.

Tags

NGSS.MS-PS4-2

A light ray is incident at an angle of 0 degrees on a surface. What is the angle of refraction?

• 0 degrees

• 90 degrees

• 45 degrees

• Depends on the medium

Tags

NGSS.MS-PS4-2