Question 1

A reflected ray of light leaves a plane mirror's surface at an angle of 30° relative to the normal. The angle of incidence was

Accepted Answer

A)  30° relative to the surface. 
B)  60° relative to the normal. 
C)  90° from the surface. 
D)  none of these. 
A)  30° relative to the surface. 
B)  60° relative to the normal. 
C)  90° from the surface. 
D)  none of these.

Question 2

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 3

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 4

When a wave is ______________, the angle of reflection equals the angle of incidence.

Accepted Answer

The answer of When a wave is ______________, the angle...

Question 5

A pencil partially submerged in a glass of water appears broken or offset because of

Accepted Answer

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

Question 6

Images of objects are formed by lenses because of

Accepted Answer

A)  refraction. 
B)  diffraction. 
C)  internal reflection. 
D)  all of these. 
A)  refraction. 
B)  diffraction. 
C)  internal reflection. 
D)  all of these.

Question 7

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...

Question 8

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 9

A(n) ______________ image cannot be focused on a screen.

Accepted Answer

The answer of A(n) ______________ image cannot be focused on...

Question 10

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 11

An example of a diverging spherical mirror is

Accepted Answer

A)  a bathroom mirror. 
B)  a round Christmas tree ornament. 
C)  a flashlight reflector. 
D)  none of these. 
A)  a bathroom mirror. 
B)  a round Christmas tree ornament. 
C)  a flashlight reflector. 
D)  none of these.

Question 12

The law of reflection

Accepted Answer

A)  applies only to plane mirrors. 
B)  is limited to regular reflection. 
C)  must be modified for diffuse reflection. 
D)  applies to all reflecting surfaces. 
A)  applies only to plane mirrors. 
B)  is limited to regular reflection. 
C)  must be modified for diffuse reflection. 
D)  applies to all reflecting surfaces.

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

The waveform of interfering waves is described by the principle of ______________.

Accepted Answer

The answer of The waveform of interfering waves is described...

Question 15

When an object is inside the focal point of a concave mirror, a(n) ______________ image always results.

Accepted Answer

The answer of When an object is inside the focal...

Question 16

Reflection from rough surfaces is called ______________ reflection.

Accepted Answer

The answer of Reflection from rough surfaces is called ______________...

Question 17

If a ray of light passes from air into glass, the angle of incidence will be

Accepted Answer

A)  less than the angle of refraction. 
B)  sometimes greater and sometimes less than the angle of refraction. 
C)  greater than the angle of refraction. 
D)  equal to the angle of refraction. 
A)  less than the angle of refraction. 
B)  sometimes greater and sometimes less than the angle of refraction. 
C)  greater than the angle of refraction. 
D)  equal to the angle of refraction.

Question 18

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 19

______________ waves cannot be polarized.

Accepted Answer

The answer of ______________ waves cannot be polarized....

Question 20

A diverging lens produces an image of a real object. This image is

Accepted Answer

A)  reduced, upright, and virtual. 
B)  enlarged, inverted, and real. 
C)  reduced, inverted, and virtual. 
D)  enlarged, upright, and real. 
E)  enlarged, upright, and virtual. 
A)  reduced, upright, and virtual. 
B)  enlarged, inverted, and real. 
C)  reduced, inverted, and virtual. 
D)  enlarged, upright, and real. 
E)  enlarged, upright, and virtual.

Exam 7: Optics and Wave Effects

A reflected ray of light leaves a plane mirror's surface at an angle of 30° relative to the normal. The angle of incidence was

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

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

When a wave is ______________, the angle of reflection equals the angle of incidence.

A pencil partially submerged in a glass of water appears broken or offset because of

Images of objects are formed by lenses because of

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

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

A(n) ______________ image cannot be focused on a screen.

The image formed by a diverging spherical lens is always

An example of a diverging spherical mirror is

The law of reflection

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

The waveform of interfering waves is described by the principle of ______________.

When an object is inside the focal point of a concave mirror, a(n) ______________ image always results.

Reflection from rough surfaces is called ______________ reflection.

If a ray of light passes from air into glass, the angle of incidence will be

The angles of incidence and reflection

______________ waves cannot be polarized.

A diverging lens produces an image of a real object. This image is

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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?