Review Test Submission_ Home work 4 – PHYS1112_
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1112
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Physics
Date
Feb 20, 2024
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Review Test Submission: Home work 4
PHYS1112: Introductory Physics II (LECTURE) 40868
Home work s
Review Test Submission: Home work 4
User
Francisco Oviedo-Mancilla
Course
PHYS1112: Introductory Physics II (LECTURE) 40868
Test
Home work 4
Started
4/22/22 10:09 PM
Submitted
4/22/22 11:09 PM
Due Date
4/27/22 11:59 PM
Status
Completed
Attempt Score
82 out of 100 points Time Elapsed
59 minutes
Question 1
A light beam has speed c
in vacuum and speed v
in a certain plastic. The index of refraction
n
of this plastic is
Question 2
Light goes from material having a refractive index of n
into a material with refractive
index n
. If the refracted light is bent away from the normal, what can you conclude about
the indices of refraction?
1
2
Question 3
Which one of the following sets of characteristics describes the image formed by a plane
mirror?
Question 4
Which one of the following numbers is the correct magnification produced by a plane
mirror?
Question 5
A negative magnification for a mirror means that
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Francisco Oviedo-Mancilla
17
2 out of 2 points
0 out of 2 points
2 out of 2 points
2 out of 2 points
2 out of 2 points
Question 6
The focal length of a concave mirror has a magnitude of 20 cm. What is its radius of
curvature?
Question 7
The focal length of a convex mirror is has a magnitude of 20 cm. What is its radius of
curvature?
Question 8
An object is placed in front of a convex mirror at a distance larger than twice the magnitude
of the focal length of the mirror. The image will appear
Question 9
If you stand in front of a convex mirror, at the same distance from it as its focal length,
Question 10
Single convex spherical mirrors produce images that
Question 11
Light having a speed in vacuum of 3.0 × 10
m/s enters a liquid of refractive index 2.0. In
this liquid, its speed will be
8
Question 12
A thin beam of light enters a thick plastic sheet from air at an angle of 32.0° with the normal
and continues in the sheet at an angle of 23.0° with the normal. What is the index of
refraction of the plastic?
Question 13
A beam of light, traveling in air, strikes a plate of transparent material at an angle of
incidence of 56.0°. It is observed that the reflected and refracted beams form an angle of
90.0°. What is the index of refraction of this material?
Question 14
3 out of 3 points
3 out of 3 points
3 out of 3 points
3 out of 3 points
3 out of 3 points
4 out of 4 points
3 out of 3 points
4 out of 4 points
0 out of 4 points
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W MATH180: HW08-.
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Find an expression for the tension T in the string.
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