Question 1

The image formed by a diverging spherical lens is always

Accepted Answer

A)  upright. 
B)  reduced. 
C)  virtual. 
D)  all of these. 
A)  upright. 
B)  reduced. 
C)  virtual. 
D)  all of these.

Question 2

The angles of incidence and reflection

Accepted Answer

A)  are not related. 
B)  can never be equal. 
C)  are measured from a normal to the reflecting surface. 
D)  add to 90°. 
A)  are not related. 
B)  can never be equal. 
C)  are measured from a normal to the reflecting surface. 
D)  add to 90°.

Question 3

For normal vision,an object can be seen clearly when it is beyond the

Accepted Answer

A)  far point. 
B)  nearsighted point. 
C)  farsighted point. 
D)  near point. 
A)  far point. 
B)  nearsighted point. 
C)  farsighted point. 
D)  near point.

Question 4

A lens that is thicker at the center than at the edge is

Accepted Answer

A)  a diverging lens only. 
B)  a convex lens only. 
C)  a converging lens only. 
D)  both a convex lens and a converging lens. 
A)  a diverging lens only. 
B)  a convex lens only. 
C)  a converging lens only. 
D)  both a convex lens and a converging lens.

Question 5

A concave mirror will produce

Accepted Answer

A)  only inverted images. 
B)  real or virtual images. 
C)  only virtual images. 
D)  only real images. 
A)  only inverted images. 
B)  real or virtual images. 
C)  only virtual images. 
D)  only real images.

Question 6

The speed of light in a material is 1.74 × 108 m/s.What is the index of refraction of this material?

Accepted Answer

A)  1.72 
B)  0.58 
C)  1.74 
D)  0.218 
A)  1.72 
B)  0.58 
C)  1.74 
D)  0.218

Question 7

Light traveling from a more dense to a less dense medium is refracted ______________ the normal.

Accepted Answer

The answer of Light traveling from a more dense to...

Question 8

Unlike spherical mirrors,spherical lenses do not have a focal length equal to ______________.

Accepted Answer

The answer of Unlike spherical mirrors,spherical lenses do not have...

Question 9

A flashlight beam is seen because of

Accepted Answer

A)  specular reflection. 
B)  diffuse reflection. 
C)  dispersion. 
D)  refraction. 
A)  specular reflection. 
B)  diffuse reflection. 
C)  dispersion. 
D)  refraction.

Question 10

A particular material has an index of refraction of 1.25.What percent of the speed of light in a vacuum is the speed of light in the material?

Accepted Answer

The answer of A particular material has an index of...

Question 11

The bending of light rays around corners is called

Accepted Answer

A)  reflection. 
B)  refraction. 
C)  interference. 
D)  diffraction. 
A)  reflection. 
B)  refraction. 
C)  interference. 
D)  diffraction.

Question 12

A simple magnifying glass has a focal length of 6.0 cm.An object is placed 4.0 cm from it.Sketch a ray diagram and give the characteristics of the image.

Accepted Answer

Virtual,up

Question 13

Total internal reflection occurs when the angle of incidence of the light is greater than the ______________ angle.

Accepted Answer

The answer of Total internal reflection occurs when the angle...

Question 14

Which of the following statements is true of the angles of incidence and reflection?

Accepted Answer

A)  They are not related 
B)  They can never be equal 
C)  They are always equal 
D)  They add to 90°. 
A)  They are not related 
B)  They can never be equal 
C)  They are always equal 
D)  They add to 90°.

Question 15

The change in wave motion produced by phase and amplitude relations of two or more waves is called a(n)______________ effect.

Accepted Answer

The answer of The change in wave motion produced by...

Question 16

Complete destructive interference occurs for two waves of the same amplitude and frequency when the waves are ______________ degrees out of phase.

Accepted Answer

The answer of Complete destructive interference occurs for two waves...

Question 17

The bending of waves around corners is called

Accepted Answer

A)  reflection. 
B)  refraction. 
C)  diffraction. 
D)  interference. 
A)  reflection. 
B)  refraction. 
C)  diffraction. 
D)  interference.

Question 18

The image of an object at the focal point of a concave spherical mirror

Accepted Answer

A)  looks the same as the object. 
B)  is said to be formed at infinity. 
C)  is real. 
D)  is reduced. 
A)  looks the same as the object. 
B)  is said to be formed at infinity. 
C)  is real. 
D)  is reduced.

Question 19

A(n)______________ image is defined as one that can be brought to a focus on a screen.

Accepted Answer

The answer of A(n)______________ image is defined as one that...

Question 20

Light for which the electric field vector is restricted to one plane is said to be

Accepted Answer

A)  linearly polarized. 
B)  linearly refracted. 
C)  linearly reflected. 
D)  unpolarized. 
A)  linearly polarized. 
B)  linearly refracted. 
C)  linearly reflected. 
D)  unpolarized.

Exam 7: Optics and Wave Effects

The image formed by a diverging spherical lens is always

The angles of incidence and reflection

For normal vision,an object can be seen clearly when it is beyond the

A lens that is thicker at the center than at the edge is

A concave mirror will produce

The speed of light in a material is 1.74 × 108 m/s.What is the index of refraction of this material?

Light traveling from a more dense to a less dense medium is refracted ______________ the normal.

Unlike spherical mirrors,spherical lenses do not have a focal length equal to ______________.

A flashlight beam is seen because of

A particular material has an index of refraction of 1.25.What percent of the speed of light in a vacuum is the speed of light in the material?

The bending of light rays around corners is called

A simple magnifying glass has a focal length of 6.0 cm.An object is placed 4.0 cm from it.Sketch a ray diagram and give the characteristics of the image.

Total internal reflection occurs when the angle of incidence of the light is greater than the ______________ angle.

Which of the following statements is true of the angles of incidence and reflection?

The change in wave motion produced by phase and amplitude relations of two or more waves is called a(n)______________ effect.

Complete destructive interference occurs for two waves of the same amplitude and frequency when the waves are ______________ degrees out of phase.

The bending of waves around corners is called

The image of an object at the focal point of a concave spherical mirror

A(n)______________ image is defined as one that can be brought to a focus on a screen.

Light for which the electric field vector is restricted to one plane is said to be

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The speed of light in a material is 1.74 × 10⁸ m/s.What is the index of refraction of this material?