Question 1

If a man wishes to use a plane mirror on a wall to view both his head and his feet as he stands in front of the mirror,the required length of the mirror:

Accepted Answer

A)  is equal to the height of the man. 
B)  is equal to one half the height of the man. 
C)  depends on the distance the man stands from the mirror. 
D)  depends on both the height of the man and the distance from the man to the mirror. 
A)  is equal to the height of the man. 
B)  is equal to one half the height of the man. 
C)  depends on the distance the man stands from the mirror. 
D)  depends on both the height of the man and the distance from the man to the mirror.

Question 2

A solid glass sphere with a radius of 8.00 cm and index of refraction of 1.50 has a small coin embedded 2.50 cm from the front surface of the sphere.For the viewer looking at the coin through the glass,at what distance from the front surface of the glass does the coin's image appear to be located?

Accepted Answer

A)  1.86 cm 
B)  2.50 cm 
C)  2.96 cm 
D)  2.42 cm 
E)  ​1.67 cm 
A)  1.86 cm 
B)  2.50 cm 
C)  2.96 cm 
D)  2.42 cm 
E)  ​1.67 cm

Question 3

A candle is 55.0 cm in front of a convex spherical mirror of radius of curvature 56.0 cm.What are the image distance and the magnification,respectively?

Accepted Answer

A)  -18.6 cm,+ 0.337 
B)  -27.7 cm,- 2.964 
C)  -1.0 cm,+ 0.331 
D)  -3.51 cm,+ 2.964 
E)  ​18.6 cm,- 0.337 
A)  -18.6 cm,+ 0.337 
B)  -27.7 cm,- 2.964 
C)  -1.0 cm,+ 0.331 
D)  -3.51 cm,+ 2.964 
E)  ​18.6 cm,- 0.337

Question 4

An object is placed at a distance of 33 cm from a thin convex lens along its axis.The lens has a focal length of 16 cm.What are the values,respectively,of the image distance and magnification?

Accepted Answer

A)  11 cm and + 1.06 
B)  31 cm and - 0.515 
C)  17 cm and - 0.941 
D)  31 cm and - 0.941 
E)  ​17 cm and - 0.515 
A)  11 cm and + 1.06 
B)  31 cm and - 0.515 
C)  17 cm and - 0.941 
D)  31 cm and - 0.941 
E)  ​17 cm and - 0.515

Question 5

Ellen places an object 48.0 cm from a concave lens.If a virtual image appears 13.0 cm from the lens on the same side as the object,what is the focal length of the lens?

Accepted Answer

A)  -10.2 cm 
B)  -17.8 cm 
C)  -20.7 cm 
D)  -35.0 cm 
E)  ​-30.5 cm 
A)  -10.2 cm 
B)  -17.8 cm 
C)  -20.7 cm 
D)  -35.0 cm 
E)  ​-30.5 cm

Question 6

If a virtual image is formed 15.0 cm along the principal axis from a convex mirror of focal length -20.0 cm,how far is the object from the mirror?

Accepted Answer

A)  60.0 cm 
B)  15.0 cm 
C)  5.00 cm 
D)  20.0 cm 
E)  ​7.00 cm 
A)  60.0 cm 
B)  15.0 cm 
C)  5.00 cm 
D)  20.0 cm 
E)  ​7.00 cm

Question 7

Which of the following best describes the image from a plane mirror?

Accepted Answer

A)  virtual and magnification greater than one 
B)  real and magnification less than one 
C)  virtual and magnification equal to one 
D)  real and magnification equal to one 
A)  virtual and magnification greater than one 
B)  real and magnification less than one 
C)  virtual and magnification equal to one 
D)  real and magnification equal to one

Question 8

An object is placed at a distance of 58 cm from a thin lens along the axis.If a real image forms at a distance of 39 cm from the lens,on the opposite side from the object,what is the focal length of the lens?

Accepted Answer

A)  23 cm 
B)  49 cm 
C)  38 cm 
D)  120 cm 
E)  ​37 cm 
A)  23 cm 
B)  49 cm 
C)  38 cm 
D)  120 cm 
E)  ​37 cm

Question 9

An object of length 3.00 cm is inside a plastic block with index of refraction 1.40.If the object is viewed through the top surface of the block at a non-zero angle from the normal,where is the object relative to its image?

Accepted Answer

A)  in the same direction as its image 
B)  above the direction of its image 
C)  below the direction of its image 
D)  More information is needed. 
A)  in the same direction as its image 
B)  above the direction of its image 
C)  below the direction of its image 
D)  More information is needed.

Question 10

An object of length 3.20 cm is inside a plastic block with index of refraction 1.30.If the object is viewed from directly above,what is the length of its image?

Accepted Answer

A)  3.20 cm 
B)  4.16 cm 
C)  2.46 cm 
D)  2.81 cm 
E)  ​1.89 cm 
A)  3.20 cm 
B)  4.16 cm 
C)  2.46 cm 
D)  2.81 cm 
E)  ​1.89 cm

Question 11

The lateral magnification for a flat mirror:

Accepted Answer

A)  is a function of the object distance. 
B)  is a function of the image distance. 
C)  is a function of the object and image distance. 
D)  is 1. 
A)  is a function of the object distance. 
B)  is a function of the image distance. 
C)  is a function of the object and image distance. 
D)  is 1.

Question 12

A girl is standing in front of a concave mirror.Consider two rays of light,one from her nose and one from her mouth that are parallel as they are traveling toward the mirror.These rays will come together:

Accepted Answer

A)  at the focal point. 
B)  at the center of curvature. 
C)  at the image point. 
D)  behind the mirror if she is too close to the mirror. 
A)  at the focal point. 
B)  at the center of curvature. 
C)  at the image point. 
D)  behind the mirror if she is too close to the mirror.

Question 13

Two convex thin lenses with focal lengths 9.0 cm and 24.0 cm are aligned on a common axis,running left to right,the 9-cm lens being on the left.A distance of 24.0 cm separates the lenses.An object is located at a distance of 14.0 cm to the left of the 9-cm lens.Where will the final image appear as measured from the 24-cm lens?

Accepted Answer

A)  - 1.26 cm 
B)  + 81.1 cm 
C)  + 1.26 cm 
D)  + 49.8 cm 
E)  ​- 81.1 cm 
A)  - 1.26 cm 
B)  + 81.1 cm 
C)  + 1.26 cm 
D)  + 49.8 cm 
E)  ​- 81.1 cm

Question 14

An object is placed 28 cm to the left of a lens of focal length 15 cm.24 cm to the right of this lens is a plane mirror.Where does the final image form?

Accepted Answer

A)  8 cm to the right of the mirror 
B)  8 cm to the left of the mirror 
C)  16 cm to the left of the lens 
D)  32 cm to the left of the lens 
E)  14​ cm to the left of the mirror 
A)  8 cm to the right of the mirror 
B)  8 cm to the left of the mirror 
C)  16 cm to the left of the lens 
D)  32 cm to the left of the lens 
E)  14​ cm to the left of the mirror

Question 15

Which best describes the image of a concave mirror when the object is located somewhere between the focal point and twice the focal point distance from the mirror?

Accepted Answer

A)  virtual,upright and magnification greater than one 
B)  real,inverted and magnification less than one 
C)  virtual,upright and magnification less than one 
D)  real,inverted and magnification greater than one 
A)  virtual,upright and magnification greater than one 
B)  real,inverted and magnification less than one 
C)  virtual,upright and magnification less than one 
D)  real,inverted and magnification greater than one

Question 16

Which of the following best describes the image of a convex mirror when the object's distance from the mirror is less than the absolute value of the focal point distance?

Accepted Answer

A)  virtual,upright and magnification greater than one 
B)  real,inverted and magnification less than one 
C)  virtual,upright and magnification less than one 
D)  real,inverted and magnification greater than one 
A)  virtual,upright and magnification greater than one 
B)  real,inverted and magnification less than one 
C)  virtual,upright and magnification less than one 
D)  real,inverted and magnification greater than one

Question 17

Sally places an object 8.0 cm from a thin convex lens along its axis.The lens has a focal length of 19.0 cm.What are the respective values of the image distance and magnification?

Accepted Answer

A)  -13.8 cm and + 1.7 
B)  13.8 cm and + 1.7 
C)  5.6 cm and + 0.7 
D)  -13.8 cm and -1.7 
E)  ​13.8 cm and -1.7 
A)  -13.8 cm and + 1.7 
B)  13.8 cm and + 1.7 
C)  5.6 cm and + 0.7 
D)  -13.8 cm and -1.7 
E)  ​13.8 cm and -1.7

Question 18

A converging lens with two convex surfaces has a front surface with radius of curvature of 14.0 cm;the back surface has radius of curvature of 24.0 cm,and it is made from material with an index of refraction of 2.90.What is the focal length of the lens?

Accepted Answer

A)  4.7 cm 
B)  17.7 cm 
C)  −17.7 cm 
D)  3.0 cm 
E)  11.6 cm 
A)  4.7 cm 
B)  17.7 cm 
C)  −17.7 cm 
D)  3.0 cm 
E)  11.6 cm

Question 19

The real image of an object is located 28.0 cm away from a concave mirror,which has a focal length of 10.0 cm.How far is the object from the mirror?

Accepted Answer

A)  18.0 cm 
B)  20.0 cm 
C)  6.4 cm 
D)  15.6 cm 
E)  ​28.0 cm 
A)  18.0 cm 
B)  20.0 cm 
C)  6.4 cm 
D)  15.6 cm 
E)  ​28.0 cm

Question 20

Ron fills a beaker with glycerin (n = 1.473)to a depth of 3.0 cm.If he looks straight down through the glycerin surface,he will perceive the liquid to be what apparent depth?

Accepted Answer

A)  4.4 cm 
B)  3.0 cm 
C)  2.0 cm 
D)  2.5 cm 
E)  ​3.6 cm 
A)  4.4 cm 
B)  3.0 cm 
C)  2.0 cm 
D)  2.5 cm 
E)  ​3.6 cm

Exam 23: Mirrors and Lenses

If a man wishes to use a plane mirror on a wall to view both his head and his feet as he stands in front of the mirror,the required length of the mirror:

A solid glass sphere with a radius of 8.00 cm and index of refraction of 1.50 has a small coin embedded 2.50 cm from the front surface of the sphere.For the viewer looking at the coin through the glass,at what distance from the front surface of the glass does the coin's image appear to be located?

A candle is 55.0 cm in front of a convex spherical mirror of radius of curvature 56.0 cm.What are the image distance and the magnification,respectively?

An object is placed at a distance of 33 cm from a thin convex lens along its axis.The lens has a focal length of 16 cm.What are the values,respectively,of the image distance and magnification?

Ellen places an object 48.0 cm from a concave lens.If a virtual image appears 13.0 cm from the lens on the same side as the object,what is the focal length of the lens?

If a virtual image is formed 15.0 cm along the principal axis from a convex mirror of focal length -20.0 cm,how far is the object from the mirror?

Which of the following best describes the image from a plane mirror?

An object is placed at a distance of 58 cm from a thin lens along the axis.If a real image forms at a distance of 39 cm from the lens,on the opposite side from the object,what is the focal length of the lens?

An object of length 3.00 cm is inside a plastic block with index of refraction 1.40.If the object is viewed through the top surface of the block at a non-zero angle from the normal,where is the object relative to its image?

An object of length 3.20 cm is inside a plastic block with index of refraction 1.30.If the object is viewed from directly above,what is the length of its image?

The lateral magnification for a flat mirror:

A girl is standing in front of a concave mirror.Consider two rays of light,one from her nose and one from her mouth that are parallel as they are traveling toward the mirror.These rays will come together:

An object is placed 28 cm to the left of a lens of focal length 15 cm.24 cm to the right of this lens is a plane mirror.Where does the final image form?

Which best describes the image of a concave mirror when the object is located somewhere between the focal point and twice the focal point distance from the mirror?

Which of the following best describes the image of a convex mirror when the object's distance from the mirror is less than the absolute value of the focal point distance?

Sally places an object 8.0 cm from a thin convex lens along its axis.The lens has a focal length of 19.0 cm.What are the respective values of the image distance and magnification?

A converging lens with two convex surfaces has a front surface with radius of curvature of 14.0 cm;the back surface has radius of curvature of 24.0 cm,and it is made from material with an index of refraction of 2.90.What is the focal length of the lens?

The real image of an object is located 28.0 cm away from a concave mirror,which has a focal length of 10.0 cm.How far is the object from the mirror?

Ron fills a beaker with glycerin (n = 1.473)to a depth of 3.0 cm.If he looks straight down through the glycerin surface,he will perceive the liquid to be what apparent depth?

Introduction

Introduction: Part A

Motion in One Dimension

Motion in One Dimension: Part A

Vectors and Two-Dimensional Motion

Vectors and Two-Dimensional Motion: Part A

The Laws of Motion

The Laws of Motion: Part A

Energy

Energy: Part A

Momentum and Collisions

Momentum and Collisions: Part A

Rotational Motion and the Law of Gravity

Rotational Motion and the Law of Gravity: Part A

Rotational Equilibrium and Rotational Dynamics

Rotational Equilibrium and Rotational Dynamics: Part A

Solids and Fluids

Solids and Fluids: Part A

Thermal Physics

Thermal Physics: Part A

Energy in Thermal Processes Heat and Internal Energy

Energy in Thermal Processes Heat and Internal Energy: Part A

The Laws of Thermodynamics Work in Thermodynamic Processes

The Laws of Thermodynamics Work in Thermodynamic Processes: Part A

Vibrations and Waves

Vibrations and Waves: Part A

Sound

Sound: Part A

Electric Forces and Electric Fields

Electric Forces and Electric Fields: Part A

Electrical Energy and Capacitance

Electrical Energy and Capacitance: Part A

Current and Resistance Electric Current

Current and Resistance Electric Current: Part A

Direct-Current Circuits Sources of EMF

Direct-Current Circuits Sources of EMF: Part A

Magnetism Magnets

Magnetism Magnets: Part A

Induced Voltages and Inductance

Induced Voltages and Inductance: Part A

Alternating-Current Circuits and Electromagnetic Waves

Alternating-Current Circuits and Electromagnetic Waves: Part A

Reflection and Refraction of Light

Reflection and Refraction of Light: Part A

Mirrors and Lenses: Part A

Wave Optics

Wave Optics: Part A

Optical Instruments

Optical Instruments: Part A

Relativity

Relativity: Part A

Quantum Physics Blackbody Radiation and Plancks Hypothesis

Quantum Physics Blackbody Radiation and Plancks Hypothesis: Part A

Atomic Physics

Atomic Physics: Part A

Nuclear Physics

Nuclear Physics: Part A

Nuclear Energy and Elementary Particles

Nuclear Energy and Elementary Particles: Part A

Particle Collisions, Mediating Photons, and Quark Structures: Exploring the Fundamentals of Physics