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Course: American System Physics
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American System Physics

A Physics Toolkit

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Representing Motion

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Accelerated Motion

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Forces in One Dimension

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Displacement and Force in Two Dimensions

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Motion in Two Dimensions

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Gravitation

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Rotational Motion

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Momentum and Its Conservation

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Energy and Its Conservation

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Thermal Energy

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States of Matter

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Vibrations and Waves

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Sound

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Fundamentals of Light

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Reflection and Refraction

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Interference and Diffraction

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Electrostatics

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Electric Current and Circuits

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Magnetic Fields

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Electromagnetic Induction and Electromagnetism

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Quantum Theory and the Atom

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Solid-State Electronics

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Nuclear and Particle Physics

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Quiz

16.0 Reflection and Refraction: Mirrors, Refraction of Light and Lenses – Check yourself

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Reflection and Refraction American Physics check yourself quiz: free practice for American System Physics. Work through this Reflection and Refraction American Physics check yourself quiz and get instant feedback on every answer. If you get stuck, review the 16.3 Lenses and Curved Mirrors — Notes lesson. More practice: American System Physics — all units. Syllabus: OpenStax free science textbooks.

  • Questions count: 24
  • Passing grade: B+
  • Time limit: 10 minutes
Start Quiz
1.
A concave lens forms images that are
real and inverted
virtual and smaller
magnified real
none
2.
Which statement best describes Concave mirror?
Diverging mirror; forms smaller virtual images.
n1sinθ1 = n2sinθ2.
Angle of incidence = angle of reflection.
Converging mirror; focal length positive.
3.
Which statement best describes Convex mirror?
1/f = 1/do + 1/di.
Separation of white light into colours.
m = hi/ho = −di/do.
Diverging mirror; forms smaller virtual images.
4.
Which statement best describes Mirror/lens equation?
Virtual, upright, same size, same distance behind mirror.
Diverging mirror; forms smaller virtual images.
Separation of white light into colours.
1/f = 1/do + 1/di.
5.
Which statement best describes Magnification?
n1sinθ1 = n2sinθ2.
Virtual, upright, same size, same distance behind mirror.
Separation of white light into colours.
m = hi/ho = −di/do.
6.
Follow the two rays drawn in the diagram for the convex lens. Where do they meet, and what kind of image forms?
Dr Dabour Hub Academy - figure 1
About 25 cm beyond the lens; real, upright, same size
On the object side; virtual, upright
About 17 cm beyond the lens; real, inverted, smaller
At F; real, enlarged
7.
The diagram shows a concave mirror (f = 10 cm) with an object 15 cm away. Which describes the image?
Dr Dabour Hub Academy - figure 2
Virtual, upright, enlarged, behind the mirror
Real, inverted, smaller, at F
Real, upright, same size at C
Real, inverted, enlarged, about 30 cm from the mirror
8.
The diagram shows an object in front of a concave (diverging) lens with f = −10 cm. Using the lens equation, where is the image?
Dr Dabour Hub Academy - figure 3
-6.67 cm (virtual, on the object side)
20 cm on the far side (real)
−20 cm (virtual, same size)
10 cm on the far side (real)
9.
Using the table of object and image distances, what is the focal length of the lens?
20 cm
15 cm
10 cm
5 cm
10.
A science-fair projector uses a convex lens of focal length 12 cm with a slide 18 cm from it. Where does the sharp image form?
36.0 cm
7.20 cm
6.00 cm
-36.0 cm
11.
For the projector with do = 18 cm and di = 36 cm, what is the magnification and what does its sign show?
+2.0; the image is upright and enlarged
−2.0; the image is inverted and twice as tall
−0.5; the image is inverted and smaller
+0.5; the image is upright and smaller
12.
A concave shaving mirror has f = 20 cm. A candle stands 60 cm in front of it. Find the image distance.
15.0 cm
40.0 cm
30.0 cm
-30.0 cm
13.
A convex car mirror has f = −15 cm. A cyclist is 30 cm from the mirror (scaled model). What is the image distance and type?
10.0 cm, real
30.0 cm, real
-30.0 cm, virtual
-10.0 cm, virtual
14.
An optics kit contains several devices. Which device is linked with the type of image it forms of a distant object?
Concave lens — real, inverted
Convex mirror — virtual, upright, smaller
Plane mirror — real, same size
Convex lens (object beyond 2F) — virtual, enlarged
15.
A table of indices of refraction is being checked. Which medium has its correct value?
Glass — 2.42
Diamond — 1.52
Water — 1.33
Air — 1.33
16.
Vision problems are corrected with suitable lenses. Which problem is matched to the right correction?
Nearsightedness — converging lens
Farsightedness — diverging lens
Farsightedness — plane mirror
Nearsightedness — diverging lens
17.
The missing entry in the table for a convex mirror is _____.
real, inverted, smaller
real, upright, larger
virtual, upright, smaller
no image
18.
A magnifier has f = 5.0 cm and a coin is held 4.0 cm from it. The image distance is _____.
−20 cm
20 cm
2.2 cm
−2.2 cm
19.
In the table, the row do = 15 cm gives an enlarged real image because the object is between F and 2F. True or false?
False, the image is diminished
False, the image is virtual
True only for a concave lens
True
20.
A negative image distance from the mirror/lens equation means the image is virtual. True or false?
False, it means the image is real
True
False, it means the image is inverted
True only for plane mirrors
21.
Farsightedness is corrected with diverging lenses. True or false?
False, farsightedness needs converging lenses
True
True only for reading
False, it needs plane glass
22.
A concave mirror is a converging mirror with a positive focal length. True or false?
False, it is diverging
False, its focal length is negative
True
True only if it is silvered on the back
23.
Microscopes and telescopes combine two or more lenses. True or false?
False, they use a single mirror only
True
False, they use prisms only
True only for toy telescopes
24.
A concave mirror with an object inside F forms a virtual, upright, enlarged image. True or false?
False, it forms a real, inverted image
False, it forms no image
True
True only for convex mirrors
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Part of Reflection and Refraction — see every lesson and quiz in this unit.
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