Question 1

A diamond is said to have "fire" because of ______________.

Accepted Answer

dispersion

Question 2

A particular material has an index of refraction of 2.75.What percent of the speed of light in vacuum is the speed of light in the material?

Accepted Answer

A)  36% 
B)  10% 
C)  8% 
D)  89% 
A)  36% 
B)  10% 
C)  8% 
D)  89% A

Question 3

The angle of incidence of a light wave is

Accepted Answer

A)  different depending on whether there is diffuse or specular reflection. 
B)  measured from a normal to the surface. 
C)  equal to the angle of refraction. 
D)  measured relative to the surface of the material. 
A)  different depending on whether there is diffuse or specular reflection. 
B)  measured from a normal to the surface. 
C)  equal to the angle of refraction. 
D)  measured relative to the surface of the material. B

Question 4

The greatest diffraction occurs for

Accepted Answer

A)  λ  d. 
D)  none of these; that is, it makes no difference. 
A)  λ  d. 
D)  none of these; that is, it makes no difference.

Question 5

A reflected ray of light leaves a plane mirror's surface at an angle of 60° relative to the normal.The angle of incidence was

Accepted Answer

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

Question 6

A double convex lens has a focal length of 0.10 m.An object 0.05 m high is placed 0.15 m from the lens surface on the principal axis.Sketch a ray diagram and give the characteristics of the image.

Accepted Answer

Real,inver

Question 7

The photoreceptors responsible for color vision are called ______________.

Accepted Answer

The answer of The photoreceptors responsible for color vision are...

Question 8

Reflection from rough surfaces is called ______________ reflection.

Accepted Answer

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

Question 9

FM radio reception may be blocked by buildings because the wavelengths are too short to be ______________ around buildings.

Accepted Answer

The answer of FM radio reception may be blocked by...

Question 10

Dispersion occurs in a medium because

Accepted Answer

A)  the index of refraction depends on wave amplitude. 
B)  of regular reflection. 
C)  of diffuse reflection. 
D)  the index of refraction depends on the wavelength. 
A)  the index of refraction depends on wave amplitude. 
B)  of regular reflection. 
C)  of diffuse reflection. 
D)  the index of refraction depends on the wavelength.

Question 11

The law of reflection applies to

Accepted Answer

A)  specular reflection. 
B)  diffuse reflection. 
C)  irregular reflection. 
D)  all of these. 
A)  specular reflection. 
B)  diffuse reflection. 
C)  irregular reflection. 
D)  all of these.

Question 12

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 13

A change in the direction of a wave resulting from its meeting an opaque material is called ______________.

Accepted Answer

The answer of A change in the direction of a...

Question 14

Optics is divided into ray optics and ______________ optics.

Accepted Answer

The answer of Optics is divided into ray optics and...

Question 15

An object is placed 10 cm to the left of a converging spherical lens.The lens has a focal length of f = 5 cm.Where is the image formed?

Accepted Answer

A)  3.3 cm to the left of the lens 
B)  3.3 cm to the right of the lens 
C)  10 cm to the left of the lens 
D)  10 cm to the right of the lens 
A)  3.3 cm to the left of the lens 
B)  3.3 cm to the right of the lens 
C)  10 cm to the left of the lens 
D)  10 cm to the right of the lens

Question 16

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

Accepted Answer

A)  travel along the normal. 
B)  bend toward the normal. 
C)  bend away from the normal. 
D)  continue traveling in the same direction. 
A)  travel along the normal. 
B)  bend toward the normal. 
C)  bend away from the normal. 
D)  continue traveling in the same direction.

Question 17

For total internal reflection,light is ______________ and none is ______________.

Accepted Answer

A)  refracted; reflected 
B)  refracted; transmitted 
C)  reflected; transmitted 
D)  transmitted; reflected 
A)  refracted; reflected 
B)  refracted; transmitted 
C)  reflected; transmitted 
D)  transmitted; reflected

Question 18

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 19

A liquid crystal display (LCD)using a "twisting" effect in the display involves

Accepted Answer

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

Question 20

The preferential orientation of the EM field vectors of light is called ______________.

Accepted Answer

The answer of The preferential orientation of the EM field...

Exam 7: Optics and Wave Effects

A diamond is said to have "fire" because of ______________.

A particular material has an index of refraction of 2.75.What percent of the speed of light in vacuum is the speed of light in the material?

The angle of incidence of a light wave is

The greatest diffraction occurs for

A reflected ray of light leaves a plane mirror's surface at an angle of 60° relative to the normal.The angle of incidence was

A double convex lens has a focal length of 0.10 m.An object 0.05 m high is placed 0.15 m from the lens surface on the principal axis.Sketch a ray diagram and give the characteristics of the image.

The photoreceptors responsible for color vision are called ______________.

Reflection from rough surfaces is called ______________ reflection.

FM radio reception may be blocked by buildings because the wavelengths are too short to be ______________ around buildings.

Dispersion occurs in a medium because

The law of reflection applies to

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

A change in the direction of a wave resulting from its meeting an opaque material is called ______________.

Optics is divided into ray optics and ______________ optics.

An object is placed 10 cm to the left of a converging spherical lens.The lens has a focal length of f = 5 cm.Where is the image formed?

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

For total internal reflection,light is ______________ and none is ______________.

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

A liquid crystal display (LCD)using a "twisting" effect in the display involves

The preferential orientation of the EM field vectors of light is called ______________.

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For total internal reflection,light is and none is .