Chapter 22 Questions

Question 1

A ray of light passes from one material into a material with a higher index of refraction. Determine whether each of the following quantities increases, decreases or remains unchanged: the ray’s angle with the normal

Answer 1

decreases

Question 2

A ray of light passes from one material into a material with a higher index of refraction. Determine whether each of the following quantities increases, decreases or remains unchanged: the light’s wavelength

Answer 2

decreases

Question 3

A ray of light passes from one material into a material with a higher index of refraction. Determine whether each of the following quantities increases, decreases or remains unchanged: The light’s frequency

Answer 3

remains unchanged

Question 4

A ray of light passes from one material into a material with a higher index of refraction. Determine whether each of the following quantities increases, decreases or remains unchanged: the light’s speed

Answer 4

decreases

Question 5

A ray of light passes from one material into a material with a higher index of refraction. Determine whether each of the following quantities increases, decreases or remains unchanged: The photon’s energy

Answer 5

remains unchanged

Question 6

Know that light moving from a material with a low index of refraction into a material with a high index of refraction will bend _______

Answer 6

TOWARDS the normal

Question 7

True or false? The angle theta in snell’s law is measured between the ray and a line perpendicular to the surface

Answer 7

true

Question 8

True or false? The speed of light in a material increases as the material’s index of refraction increases

Answer 8

false

Question 9

True or false? The ratio v/lambda of a photon’s speed to its wavelength has the same value for any index of refraction n.

Answer 9

True

Question 10

True or false? Photons of blue light have a higher energy than photons of red light

Answer 10

true

Question 11

True or false? a photon’s energy depends on its brightness

Answer 11

false

Question 12

Light in medium A undergoes total internal reflection as it reaches the interface with medium B. Which of the following statements must be true? (select 2)

Answer 12

nA>nB
light traveling in the opposite direction, from B into A, will not undergo total internal reflection

Question 13

Light can travel from air into water. The image shows different paths for the light to take. Which one is it most likely to follow?

Answer 13

Path C

Question 14

A light ray containing red and blue light is incident on a slab of glass. Which of the sketches represents the most likely outcome?

Answer 14

Option C
this option shows that the light bends towards the normal, but that red light bends the LEAST (it appears ‘on top’)

Question 15

Specular reflection

Answer 15

when light is reflected as a ray, typically in one direction or close to one direction

Question 16

diffuse reflection

Answer 16

when light is reflected in all directions or scattered

Question 17

As light travels from a vacuum (n=1) to a medium like glass (n>1), which of the following properties remains the same?

Answer 17

frequency

Question 18

when you see this card, open the chapter 22 concept questions and go through the image based problems