Which of the following is NOT a property of the images formed by a plane mirror?
Physics- Chapter 20 Review

Quiz
•
Physics
•
11th Grade
•
Medium
Hannah Boston
Used 2+ times
FREE Resource
24 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
The image is located behind the mirror.
The images are a result of specular reflection.
The magnification is 1
the image distance is equal to the object distance (although it may be negative).
The image is smaller than the object.
Answer explanation
A plane mirror forms images that are the same size as the object.
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Ray X strikes a flat mirror at an angle of θ = 28 degrees. What is the angle of incidence
62 °
150 °
120 °
90 °
28 °
Answer explanation
The angle of incidence is measured relative to the normal therefore in this case it is 90° - 28.0° = 62.0°.
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
The radius of curvature of a spherical mirror is 70 cm. What is the focal length of the mirror?
110 cm
18 cm
70 cm
35 cm
4.0 cm
Answer explanation
f=R/2
70 cm/2=35 cm
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
On a bright and sunny day, a pedestrian notices his faint image in a shop window. Why did he see his image in the glass?
Some of the light passed through the glass.
Some of the light was reflected off of the glass.
Some of the light was red.
Some of the light was diffracted by the glass.
Some of the light was refracted by the glass.
Answer explanation
Some of the light was reflecting off of the surface of the glass, while some of the light was passing through the glass (and, presumably, a little bit of light was absorbed by the glass, too).
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Skiers will often wear sunglasses because much of the sunlight that strikes snow is
absorbed
diffracted
reflected
conducted
transmitted
Answer explanation
Much of the sunlight reflects off of snow, which is why snow appears bright white.
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
A 40-cm-wide object seen through an optical device appears inverted and 20 cm wide. What is the magnification of the optical device?
2.0
0.50
-0.50
1.0
-1.0
Answer explanation
The size of the image is hi = 20 cm and the size of the object is ho = 40 cm.
−hi/ho=−20 cm/40 cm
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
A solar panel measures 3.0 × 8.0 m in size and collects energy at a rate of 16800 W in full sunlight. What is the intensity of the sunlight falling on the panel? (Assume the panel is 100% efficient.)
24 W/m2
1900 W/m2
700 W/m2
260 W/m2
17000 W/m2
Answer explanation
Intensity is power per unit area, or P ÷ A. For this problem the area is 3.0 m × 8.0 m = 24 m2. The intensity is then 16800 ÷ 24 = 700 W/m2.
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