Practice Problems
Basic Refraction Properties
Directions:
On this worksheet you will examine several situations dealing with properties of light as it refracts through transparent substances.
omit
Question 1
A beam of light traveling in air has an angle of incidence of 40.0º when it enters a transparent medium which has an index of refraction of 1.52. What is the angle of refraction of the beam inside the medium?
59.7
65.0
30.3
25.0
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Question 2
If the wavelength of the beam of light in
Question #1
while traveling through air is 538 nm, then what is its wavelength while traveling in the transparent medium?
818 nm
354 nm
367 nm
498 nm
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Question 3
What is the frequency of the light in
Question #2
as it is traveling through the transparent medium?
5.58 x 10
12
hz
5.58 x 10
14
hz
3.67 x 10
14
hz
1.79 x 10
15
hz
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Question 4
What is the average speed of light as the beam in
Question #2
travels through the transparent medium?
4.56 x 10
7
m/sec
5.07 x 10
7
m/sec
1.97 x 10
8
m/sec
1.48 x 10
8
m/sec
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Question 5
A ray of light travels from air, medium #1, into medium #2 as shown below.
If the angle
q
1
equals 60º and
q
2
= 14.8º then determine the second medium's index of refraction.
1.96
1.51
1.29
3.39
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Question 6
Which diagram correctly illustrates the path a beam of light, initially traveling through air, as it enters and exits a right triangular prism having an index of 1.52?
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Question 7
If the length of the light's path inside the prism is measured to be 4 cm, how much time was required for the light to pass through the prism and back into the air?
7.89 x 10
-10
sec
2.7 x 10
-10
sec
4.93 x 10
-10
sec
2.03 x 10
-10
sec
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Question 8
Which of the following statements are true about a beam of light when it transitions into a medium with a lower index of refraction?
its frequency decreases
its wavelength decreases
its speed decreases
its refracted angle is less than its angle of incidence
only 4
none of the statements listed are true
2 and 3
only 1
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