Question 1

A beam of light that consists of a mixture of red,green and violet light strikes a prism (surrounded by air)as shown.Indices of refraction for this prism for the various colors are indicated in the table.An observer is located to the right of the prism as shown.
  
-Which physical phenomenon is illustrated by the fact that the observer will not see all three colors of light?

Accepted Answer

A)  Doppler effect
B)  dispersion
C)  diffraction
D)  total internal reflection
E)  interference D

Question 2

The length of the wing of an insect is 1 mm.When viewed through a microscope,the image is 1 m long and located 5 m away.Determine the angular magnification if the observer's near point of 25 cm.

Accepted Answer

A)  50
B)  100
C)  200
D)  500
E)  1000 A

Question 3

An object is placed 16 cm to the left of a converging lens with a 4.0-diopter refractive power.At what distance from the object will the image be located?

Accepted Answer

A)  14 cm
B)  28 cm
C)  44 cm
D)  56 cm
E)  64 cm B

Question 4

The leg of a spider is 0.2 cm long.When viewed through a microscope,a person with a near point of 25 cm sees an image 2 m long located 10 m away.What is the angular magnification?

Accepted Answer

A)  25
B)  50
C)  100
D)  250
E)  1000

Question 5

Complete the following statement: Fiber optics make use of

Accepted Answer

A)  total internal reflection.
B)  polarization.
C)  chromatic aberration.
D)  Brewster's angle.
E)  dispersion.

Question 6

The figure shows a point source of unpolarized light at A inside a uniform transparent crystal.  The ray AO in the crystal strikes the plane surface SS' making an angle of 30° with the normal.   This angle is the critical angle for transmission into air.

-If point A is 16 cm below the plane SS',what is the radius of the largest circle at the air-crystal interface through which light can emerge from the crystal?

Accepted Answer

A)  9.2 cm
B)  16.0 cm
C)  18.4 cm
D)  27.0 cm
E)  32.0 cm

Question 7

An object is placed 20.0 cm from a converging lens with focal length 15 cm.A concave mirror with focal length 10 cm is located 75 cm to the right of the lens as shown in the figure.Note: The figure is not drawn to scale.
 
-If the height of the object is 1.0 cm,what is the height of the image?

Accepted Answer

A)  1.2 cm
B)  2.4 cm
C)  6.0 cm
D)  12 cm
E)  24 cm

Question 8

The bending of light as it moves from one medium to another with differing indices of refraction is due to a change in what property of the light?

Accepted Answer

A)  amplitude
B)  period
C)  frequency
D)  speed
E)  color

Question 9

When an object is placed 20 cm from a diverging lens,a reduced image is formed.Which one of the following statements is necessarily true?

Accepted Answer

A)  The image is inverted.
B)  The image could be real.
C)  The image distance must be greater than 20 cm.
D)  The focal length of the lens may be less than 20 cm.
E)  The refractive power of the lens must be greater than 0.05 diopters.

Question 10

The figure shows a point source of unpolarized light at A inside a uniform transparent crystal.  The ray AO in the crystal strikes the plane surface SS' making an angle of 30° with the normal.   This angle is the critical angle for transmission into air.

-For what angle of incidence will the reflected rays of light be completely polarized?

Accepted Answer

A)  15°
B)  27°
C)  30°
D)  60°
E)  63°

Question 11

An object with a height of 4.0 cm is placed 30.0 cm from a lens.The resulting inverted image has a height of 1.5 cm.What is the focal length of the lens?

Accepted Answer

A)  7.5 cm
B)  8.2 cm
C)  15 cm
D)  17 cm
E)  21 cm

Question 12

Kaitlynne is using a magnifying glass (f = 0.098 m)while trying to solder a computer circuit board.The image is 0.21 m from the lens.What is the distance between the glass and the circuit board?

Accepted Answer

A)  0.052 m
B)  0.062 m
C)  0.067 m
D)  0.093 m
E)  0.16 m

Question 13

A 2.00-cm tall object is placed 40.0 cm from a lens.The resulting image is 8.00-cm tall and upright relative to the object.Determine the focal length of the lens.

Accepted Answer

A)  26.6 cm
B)  32.0 cm
C)  53.3 cm
D)  64.0 cm
E)  80.0 cm

Question 14

An object is placed at the focal point of a converging lens of focal length f.What is the image distance?

Accepted Answer

A)  f
B)  2f
C)  1/f
D)  2/f
E)  at an infinite distance

Question 15

Complete the following statement: The term dispersion refers to the fact that the index of refraction of certain materials

Accepted Answer

A)  depends on the Brewster angle.
B)  depends on the wavelength of light.
C)  depends on the angle of incidence.
D)  depends on the intensity of light.
E)  depends on the polarization of light.

Question 16

The figure shows the path of a ray of light as it travels through air and crosses a boundary into water.The index of refraction of water for this light is 1.33.
 
-What is the angle of refraction for this situation?

Accepted Answer

A)  0.37°
B)  0.65°
C)  22°
D)  41°
E)  60°

Question 17

A 4-cm object is placed in front of a converging lens of focal length 20 cm.The image is formed 60 cm on the other side of the lens.Which entry in the table below is correct?

Accepted Answer

The answer of A 4-cm object is placed in front...

Question 18

The figure is a scaled diagram of a an object and a converging lens.The focal length of the lens is 5.0 units.An object is placed 3.0 units from the lens as shown.
 
-Approximately,what is the image distance?

Accepted Answer

A)  -2.0 units
B)  -4.0 units
C)  +6.0 units
D)  -7.5 units
E)  +9.0 units

Question 19

A fish swims 4.0 m below the surface of a still lake as shown in the figure.When an archer attempts to shoot the fish,the arrow enters the water at point P that is a horizontal distance 1.2 m from the fish.
 
-Which one of the following phrases most accurately describes the image of the fish as seen by the archer?

Accepted Answer

A)  real and inverted
B)  virtual and inverted
C)  real and reversed right to left
D)  virtual with its orientation unaltered
E)  real with its orientation unaltered

Question 20

The figure shows a point source of unpolarized light at A inside a uniform transparent crystal.  The ray AO in the crystal strikes the plane surface SS' making an angle of 30° with the normal.   This angle is the critical angle for transmission into air.

-Which one of the following statements is true concerning this situation?

Accepted Answer

A)  When the angle of incidence is equal to the Brewster angle,the angle of refraction is 13°.
B)  When the angle of incidence is equal to the Brewster angle,the angle of refraction is 63°.
C)  When the angle of incidence is equal to the Brewster angle,the angle of refraction is 42°.
D)  Since the Brewster angle is less than the critical angle,there is no refraction when the angle of incidence is equal to qB.
E)  Since the Brewster angle is greater than the critical angle,there is no refraction when the angle of incidence is equal to q B.

Exam 26: The Refraction of Light: Lenses and Optical Instruments

The length of the wing of an insect is 1 mm.When viewed through a microscope,the image is 1 m long and located 5 m away.Determine the angular magnification if the observer's near point of 25 cm.

An object is placed 16 cm to the left of a converging lens with a 4.0-diopter refractive power.At what distance from the object will the image be located?

The leg of a spider is 0.2 cm long.When viewed through a microscope,a person with a near point of 25 cm sees an image 2 m long located 10 m away.What is the angular magnification?

Complete the following statement: Fiber optics make use of

An object is placed 20.0 cm from a converging lens with focal length 15 cm.A concave mirror with focal length 10 cm is located 75 cm to the right of the lens as shown in the figure.Note: The figure is not drawn to scale. -If the height of the object is 1.0 cm,what is the height of the image?

The bending of light as it moves from one medium to another with differing indices of refraction is due to a change in what property of the light?

When an object is placed 20 cm from a diverging lens,a reduced image is formed.Which one of the following statements is necessarily true?

An object with a height of 4.0 cm is placed 30.0 cm from a lens.The resulting inverted image has a height of 1.5 cm.What is the focal length of the lens?

Kaitlynne is using a magnifying glass (f = 0.098 m) while trying to solder a computer circuit board.The image is 0.21 m from the lens.What is the distance between the glass and the circuit board?

A 2.00-cm tall object is placed 40.0 cm from a lens.The resulting image is 8.00-cm tall and upright relative to the object.Determine the focal length of the lens.

An object is placed at the focal point of a converging lens of focal length f.What is the image distance?

Complete the following statement: The term dispersion refers to the fact that the index of refraction of certain materials

A 4-cm object is placed in front of a converging lens of focal length 20 cm.The image is formed 60 cm on the other side of the lens.Which entry in the table below is correct?

The figure is a scaled diagram of a an object and a converging lens.The focal length of the lens is 5.0 units.An object is placed 3.0 units from the lens as shown. -Approximately,what is the image distance?

Exam 26: The Refraction of Light: Lenses and Optical Instruments

The length of the wing of an insect is 1 mm.When viewed through a microscope,the image is 1 m long and located 5 m away.Determine the angular magnification if the observer's near point of 25 cm.

An object is placed 16 cm to the left of a converging lens with a 4.0-diopter refractive power.At what distance from the object will the image be located?

The leg of a spider is 0.2 cm long.When viewed through a microscope,a person with a near point of 25 cm sees an image 2 m long located 10 m away.What is the angular magnification?

Complete the following statement: Fiber optics make use of

An object is placed 20.0 cm from a converging lens with focal length 15 cm.A concave mirror with focal length 10 cm is located 75 cm to the right of the lens as shown in the figure.Note: The figure is not drawn to scale. -If the height of the object is 1.0 cm,what is the height of the image?

The bending of light as it moves from one medium to another with differing indices of refraction is due to a change in what property of the light?

When an object is placed 20 cm from a diverging lens,a reduced image is formed.Which one of the following statements is necessarily true?

An object with a height of 4.0 cm is placed 30.0 cm from a lens.The resulting inverted image has a height of 1.5 cm.What is the focal length of the lens?

Kaitlynne is using a magnifying glass (f = 0.098 m) while trying to solder a computer circuit board.The image is 0.21 m from the lens.What is the distance between the glass and the circuit board?

A 2.00-cm tall object is placed 40.0 cm from a lens.The resulting image is 8.00-cm tall and upright relative to the object.Determine the focal length of the lens.

An object is placed at the focal point of a converging lens of focal length f.What is the image distance?

Complete the following statement: The term dispersion refers to the fact that the index of refraction of certain materials

The figure shows the path of a ray of light as it travels through air and crosses a boundary into water.The index of refraction of water for this light is 1.33. -What is the angle of refraction for this situation?

A 4-cm object is placed in front of a converging lens of focal length 20 cm.The image is formed 60 cm on the other side of the lens.Which entry in the table below is correct?

The figure is a scaled diagram of a an object and a converging lens.The focal length of the lens is 5.0 units.An object is placed 3.0 units from the lens as shown. -Approximately,what is the image distance?