What letter is used to represent refractive index?

• c

• n

• v

• θ

What letter is used to represent the speed of light?

• c

• n

• v

• θ

Tags

NGSS.HS-PS4-1

What is a line drawn at 90° to a surface called?

• incident ray

• normal line

• refracted ray

• tangent

What causes refraction?

• A change in frequency of a wave.

• A change in amplitude of a wave

• A change in speed of a wave.

• A change in phase of a wave.

What direction does the ray bend when entering a more optically dense material, where the wave travels more slowly?

• Towards the normal.

• Away from the normal.

• No change.

• Answer is not listed above.

Tags

NGSS.HS-PS4-5

A beam of light strikes a glass block with refractive index of 1.52, at an angle of 5°, what is the angle of refraction?

• 7.51

• 0.087

• 0.13

• 3.29

What is the angle of incidence on a glass block with refractive index 1.52 if the angle of refraction is 32°?

• 52.6

• 20.7

• 32.0

• 74.3

What is the refractive index of air?

• 1.5

• 1.2

• 0.5

• 1.0

Tags

NGSS.HS-PS4-3

Which is the correct equation for refractive index?

• n = v /c

• n = v × c

• n = c / v

• n = c ^v

Tags

NGSS.HS-PS4-3

Which of the following is true about a wave that has been refracted?

• The speed and frequency changes, but the wavelength stays the same.

• The speed and wavelength changes, but the frequency stays the same.

• The wavelength and frequency changes, but the speed stays the same.

• The speed and frequency changes, but the amplitude stays the same.

Tags

NGSS.HS-PS4-1