# Quiz Questions Over Refraction

20 Questions | Total Attempts: 680  Settings  .

• 1.
As temperature increases, the index of refraction of air....
• A.

Increases

• B.

Decreases

• C.

Remains constant

• D.

Becomes negligible

• 2.
The figure shows the path of a portion of a ray of light as it passes  through three different materials. Note: The figure is drawn to scale. What can be concluded concerning the refractive indices of these  three materials?
• A.

N1< n2< n3

• B.

N1> n2> n3

• C.

N3< n1< n2

• D.

N2< n1< n3

• E.

N1< n3< n2

• 3.
Refraction occurs when...
• A.

Light travels through the boundary of two media that have different indices of refraction

• B.

Light strikes the boundary of two media that have the same indices of refraction

• C.

The angle of incidence equals zero

• D.

The angle of reflection equals zero

• 4.
When light travels from one medium into a medium with a lower index of refraction...
• A.

The speed of the light increases

• B.

The angle of refraction is smaller than the angle of incidence

• C.

The refracted light bends towards the normal

• D.

The angle of incidence equals the angle of refraction

• 5.
The index of refraction of transparent mineral beryl is 1.6. Transparent Quartz has an index of refraction of 1.54, while diamond has an index of refraction of 2.42. Based on these facts, which of the following statements is true?
• A.

All three minerals bend light to the same extent

• B.

Quartz bends light more than beryl does

• C.

Beryl bends light more than quartz does

• D.

Both beryl and quartz bend light more than diamond does

• 6.
Light passes from medium 1 to medium 2 and bends along the path between points A and B as shown below. Which of the following statements is correct?
• A.

Medium 1 is more dense than medium 2

• B.

Medium 1 is less dense than medium 2

• C.

The speed of the light in medium 1 is greater than the speed of the light in medium 2

• D.

The frequency of the light in medium 1 is greater than the frequency of the light in medium 2

• E.

The wavelength is the same in medium 1 and medium 2

• 7.
A beam of light is incident onto a glass plate. Possible angles for the reflected and refracted rays are drawn in the figure below.   Which of the rays best represents the refracted ray?
• A.

A

• B.

B

• C.

C

• D.

D

• E.

E

• 8.
A ray of light is shined from beneath the water to the air above the  water as shown. Which of the following rays is the refracted ray?
• A.

AB

• B.

BD

• C.

BF

• D.

BC

• E.

BE

• 9.
A beam of light passes from air into glass. Which of the following statements is true?
• A.

The angle of incidence is greater than the angle of refraction in the glass

• B.

The angle of incidence is less than the angle of refraction in the glass

• C.

The angle of incidence is equal to the angle of refraction in the glass

• D.

The frequency of the light decreases

• E.

The frequency of the light increases.

• 10.
A beam of light traveling in medium 1 strikes the interface to another transparent medium 2. If the speed of light is less in medium 2 than in medium 1, the beam will…
• A.

Refract towards the normal

• B.

Refract away from the normal

• C.

Undergo total internal reflection

• D.

Have an angle of reflection smaller than the angle of incidence

• E.

Have an angle of reflection greater than the angle of incidence

• 11.
A ray of light goes obliquely from water to glass. The angle of incidence in the water is θ1, the angle of refraction in the glass is θ2, the index of refraction of water is n1 and the index of refraction of glass in n2.Which of the following is a correct relationship for this case?
• A.

n1 sin θ1 = sin θ2

• B.

N1 sin θ2 = sin θ1

• C.

N2 sin θ1 = sin θ2

• D.

N2 sin θ2 = sin θ1

• E.

n2 sin θ2 = n1 sin θ1

• 12.
A ray of light passes through a piece of glass at the angle of incidence shown below. As the light passes through the glass and exits the glass into the air, the path of the ray is represented by which of the rays shown?
• A.

A

• B.

B

• C.

C

• D.

D

• E.

E

• 13.
A flashlight beam is directed at a swimming pool in the dark at an angle of 46° with respect to the normal  to the surface of the water. What is the angle of refraction of the beam in the water? (The refractive index for water is 1.33.)
• A.

18°

• B.

30°

• C.

33°

• D.

44°

• E.

54°

• 14.
Light traveling in a medium of index of refraction n1 is incident on another medium having an index of refraction n2 Under which of the following conditions can total internal reflection occur at the interface of  the two media?
• A.

The indices of refraction have the relation n2 > n1

• B.

The indices of refraction have the relation n1 > n2

• C.

Light travels slower in the second medium than in the first.

• D.

The angle of incidence is less than the critical angle.

• E.

The angle of incidence must equal the refraction angle

• 15.
A beam of light passes  from  a thick piece of glass  into the air as shown.   Which of the following angles is the angle of refraction?
• A.

1

• B.

2

• C.

3

• D.

4

• E.

5

• 16.
The speed of light in a certain transparent substance is two-fifths of its speed in air. The index of refraction of this substance is…
• A.

0.4

• B.

1.4

• C.

2.0

• D.

2.5

• E.

5.0

• 17.
The speed of light in a piece of crown glass is 2 x 108 m/s. What is the index of refraction of crown glass?
• A.

2

• B.

1.5

• C.

0.67

• D.

0.33

• E.

0.2

• 18.
A small beam of light shines on a glass plate with plane parallel surfaces. The index of refraction of glass is 1.60. The angle of incidence of the light is 300. The angle of emergence of the light from the glass is…
• A.

18 degrees

• B.

30 degrees

• C.

45 degrees

• D.

48 degrees

• E.

60 degrees

• 19.
Which diagram correctly shows a ray of light passing through a rectangular glass block?
• A.

A

• B.

B

• C.

C

• D.

D

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