Question 1

The speed of light in a particular transparent medium is 2/8 the speed of light in a vacuum.What is the index of refraction of the material?

Accepted Answer

A)  1.3 
B)  0.75 
C)  4 
D)  0.25 
A)  1.3 
B)  0.75 
C)  4 
D)  0.25

Question 2

All real images

Accepted Answer

A)  cannot be focused on a screen. 
B)  are erect. 
C)  can be focused on a screen. 
D)  are inverted. 
A)  cannot be focused on a screen. 
B)  are erect. 
C)  can be focused on a screen. 
D)  are inverted.

Question 3

A light wave traveling in air strikes a plane mirror surface at an angle of 30° relative to the normal.The wave is reflected at an angle of

Accepted Answer

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

Question 4

The ratio of the speed of light in a vacuum to the speed of light in a medium is known as the index of

Accepted Answer

A)  reflection. 
B)  refraction. 
C)  diffraction. 
D)  none of these. 
A)  reflection. 
B)  refraction. 
C)  diffraction. 
D)  none of these.

Question 5

A ray of light in water strikes an air-water interface at an angle of incidence greater than the critical angle.The ray

Accepted Answer

A)  emerges but is bent away from the normal. 
B)  travels along the interface. 
C)  emerges but is bent toward the normal. 
D)  is totally reflected into the water. 
A)  emerges but is bent away from the normal. 
B)  travels along the interface. 
C)  emerges but is bent toward the normal. 
D)  is totally reflected into the water.

Question 6

A person who can clearly see nearby objects but not distant ones is ______________.

Accepted Answer

The answer of A person who can clearly see nearby...

Question 7

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

Accepted Answer

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

Question 8

Reflection from smooth surfaces is called ______________ reflection.

Accepted Answer

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

Question 9

A visual defect wherein a person can see nearby objects clearly but not distant objects is called

Accepted Answer

A)  dispersion. 
B)  destructive interference. 
C)  farsightedness. 
D)  nearsightedness. 
A)  dispersion. 
B)  destructive interference. 
C)  farsightedness. 
D)  nearsightedness.

Question 10

A visual defect wherein a person can see distant objects clearly but not nearby objects is called

Accepted Answer

A)  dispersion. 
B)  destructive interference. 
C)  farsightedness. 
D)  nearsightedness. 
A)  dispersion. 
B)  destructive interference. 
C)  farsightedness. 
D)  nearsightedness.

Question 11

The image of a convex mirror is always virtual,______________,and smaller.

Accepted Answer

The answer of The image of a convex mirror is...

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

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

Accepted Answer

transmitte

Question 14

The index of refraction of transparent materials is

Accepted Answer

A)  equal to 1. 
B)  greater than 1. 
C)  less than 1. 
D)  any of these. 
A)  equal to 1. 
B)  greater than 1. 
C)  less than 1. 
D)  any of these.

Question 15

The image of a convex mirror is always

Accepted Answer

A)  virtual, inverted, and larger. 
B)  virtual, upright, and smaller. 
C)  real, upright, and smaller. 
D)  real, inverted, and larger. 
A)  virtual, inverted, and larger. 
B)  virtual, upright, and smaller. 
C)  real, upright, and smaller. 
D)  real, inverted, and larger.

Question 16

Polarizing sunglasses have the transmission axis oriented ______________.

Accepted Answer

The answer of Polarizing sunglasses have the transmission axis oriented...

Question 17

When light enters a denser medium,the speed of the light ______________.

Accepted Answer

The answer of When light enters a denser medium,the speed...

Question 18

The image of a real object formed by a single converging lens cannot be

Accepted Answer

A)  real, inverted, and enlarged. 
B)  real, inverted, and the same size as the object. 
C)  virtual, upright, and enlarged. 
D)  real, inverted, and reduced. 
E)  virtual, upright, and reduced. 
A)  real, inverted, and enlarged. 
B)  real, inverted, and the same size as the object. 
C)  virtual, upright, and enlarged. 
D)  real, inverted, and reduced. 
E)  virtual, upright, and reduced.

Question 19

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

Accepted Answer

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

Question 20

According to the law of reflection,the angle of reflection is equal to ______________.

Accepted Answer

the angle

Exam 7: Optics and Wave Effects

The speed of light in a particular transparent medium is 2/8 the speed of light in a vacuum.What is the index of refraction of the material?

All real images

A light wave traveling in air strikes a plane mirror surface at an angle of 30° relative to the normal.The wave is reflected at an angle of

The ratio of the speed of light in a vacuum to the speed of light in a medium is known as the index of

A ray of light in water strikes an air-water interface at an angle of incidence greater than the critical angle.The ray

A person who can clearly see nearby objects but not distant ones is ______________.

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

Reflection from smooth surfaces is called ______________ reflection.

A visual defect wherein a person can see nearby objects clearly but not distant objects is called

A visual defect wherein a person can see distant objects clearly but not nearby objects is called

The image of a convex mirror is always virtual,______________,and smaller.

The law of reflection

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

The index of refraction of transparent materials is

The image of a convex mirror is always

Polarizing sunglasses have the transmission axis oriented ______________.

When light enters a denser medium,the speed of the light ______________.

The image of a real object formed by a single converging lens cannot be

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

According to the law of reflection,the angle of reflection is equal to ______________.

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