Question 1

The cornea of the human eye is an example of a

Accepted Answer

A)  converging mirror. 
B)  converging lens. 
C)  diverging lens. 
D)  convex mirror. 
A)  converging mirror. 
B)  converging lens. 
C)  diverging lens. 
D)  convex mirror.

Question 2

The image formed by a concave mirror when the object distance is greater than the focal length is always

Accepted Answer

A)  real 
B)  right side up 
C)  virtual 
D)  at a distance greater than the focal length
Fill in the Blank Questions 
A)  real 
B)  right side up 
C)  virtual 
D)  at a distance greater than the focal length
Fill in the Blank Questions

Question 3

A woman 1.6 m in height wants a plane mirror so that she can view her full height. The minimum vertical size of such a mirror is

Accepted Answer

A)  0.4 m. 
B)  0.8 m. 
C)  1.6 m. 
D)  3.2 m. 
E)  impossible to say without knowing the viewing distance. 
A)  0.4 m. 
B)  0.8 m. 
C)  1.6 m. 
D)  3.2 m. 
E)  impossible to say without knowing the viewing distance.

Question 4

A beam of white light in air passes through the transparent object shown. Dispersion is observed to occur. From the diagram we can tell that

Accepted Answer

A)  the index of refraction is larger for red light than blue. 
B)  the index of refraction is larger for blue light than red. 
C)  the object acts as a converging lens. 
D)  the object behaves as a concave mirror. 
A)  the index of refraction is larger for red light than blue. 
B)  the index of refraction is larger for blue light than red. 
C)  the object acts as a converging lens. 
D)  the object behaves as a concave mirror.

Question 5

Convex (converging) lenses are worn by

Accepted Answer

A)  a nearsighted person to make rays from a nearby object diverge less strongly. 
B)  a nearsighted person to make rays from a distant object diverge more strongly. 
C)  a farsighted person to make rays from a distant object diverge more strongly. 
D)  a farsighted person to make rays from a nearby object diverge less strongly. 
A)  a nearsighted person to make rays from a nearby object diverge less strongly. 
B)  a nearsighted person to make rays from a distant object diverge more strongly. 
C)  a farsighted person to make rays from a distant object diverge more strongly. 
D)  a farsighted person to make rays from a nearby object diverge less strongly.

Question 6

Rays from a distant object do not diverge enough for a nearsighted person to focus; this can be corrected with a

Accepted Answer

A)  diverging or positive lens. 
B)  diverging or negative lens. 
C)  converging or positive lens. 
D)  converging or negative lens. 
A)  diverging or positive lens. 
B)  diverging or negative lens. 
C)  converging or positive lens. 
D)  converging or negative lens.

Question 7

If the image formed by a concave mirror is closer to the mirror than the object is, then, compared to the object, the image will be

Accepted Answer

A)  smaller and inverted. 
B)  larger and inverted. 
C)  larger and erect. 
D)  larger and real. 
A)  smaller and inverted. 
B)  larger and inverted. 
C)  larger and erect. 
D)  larger and real.

Question 8

When light is reflected from a smooth, plane mirror

Accepted Answer

A)  the angle of reflection is the same as the angle of incidence. 
B)  the light is changed to a lower frequency. 
C)  most of the light is scattered into multiple directions. 
D)  the wave characteristics are predominant. 
A)  the angle of reflection is the same as the angle of incidence. 
B)  the light is changed to a lower frequency. 
C)  most of the light is scattered into multiple directions. 
D)  the wave characteristics are predominant.

Question 9

An iPod is 20 cm in front of a flat mirror. You see the reflected image and must refocus your eye, perhaps even take off your eyeglasses, because

Accepted Answer

A)  your retina has a different curvature than the flat mirror. 
B)  the flat mirror replaces the object in a random direction. 
C)  the image is inverted but virtual. 
D)  the image location is 20 cm behind the mirror. 
A)  your retina has a different curvature than the flat mirror. 
B)  the flat mirror replaces the object in a random direction. 
C)  the image is inverted but virtual. 
D)  the image location is 20 cm behind the mirror.

Question 10

Light enters water (n = 1.33) from air. The incident light ray makes a 0.44$\degree$ angle with the normal to the surface on the air side. What will be the angle made with the normal by the refracted ray on the water side?

Accepted Answer

A)  nearly 90$\degree$ 
B)  1.58$\degree$ 
C)  0.33$\degree$ 
D)  0.188$\degree$ 
A)  nearly 90$\degree$ 
B)  1.58$\degree$ 
C)  0.33$\degree$ 
D)  0.188$\degree$

Question 11

Lenses can be used to focus sunlight to a small point to burn paper or dry brush. A person demonstrates this using their own eyeglasses as the lenses. From this you can tell that

Accepted Answer

A)  the person is farsighted. 
B)  the person is nearsighted. 
C)  the person is either near- or farsighted but not both. 
D)  the person is both near- and farsighted. 
A)  the person is farsighted. 
B)  the person is nearsighted. 
C)  the person is either near- or farsighted but not both. 
D)  the person is both near- and farsighted.

Question 12

The magnification produced by a plane mirror is ____________ (sign and magnitude).

Accepted Answer

+1 or + and 1 or pos

Question 13

Rays of light traveling through different media hit the boundary between the media and the air. The angle of incidence is the same in each case. Which medium has the largest index of refraction?

Accepted Answer

A)  A 
B)  B 
C)  C 
D)  D 
A)  A 
B)  B 
C)  C 
D)  D

Question 14

When one observes a scratch on the bottom of a block of clear plastic, the scratch appears to be 2.5 cm below the top surface as viewed from above. The actual thickness of the plastic block is 3.0 cm. The index of refraction of the block is ______________.

Accepted Answer

The answer of When one observes a scratch on the...

Question 15

A 1 cm object is placed 20 cm from a lens. The lens forms a real and inverted image of size 1.5 cm. What is the focal length of the lens?

Accepted Answer

A)  8.0 cm 
B)  12 cm 
C)  16 cm 
D)  20 cm 
E)  24 cm 
A)  8.0 cm 
B)  12 cm 
C)  16 cm 
D)  20 cm 
E)  24 cm

Question 16

A ray of light traveling in a calm pond strikes the surface at an angle of incidence which is 2$\degree$ larger than the critical angle. This ray will

Accepted Answer

A)  be refracted away from the normal to the surface in the air. 
B)  undergo total internal reflection and not enter the air at all. 
C)  be refracted toward the normal to the surface in the air. 
A)  be refracted away from the normal to the surface in the air. 
B)  undergo total internal reflection and not enter the air at all. 
C)  be refracted toward the normal to the surface in the air.

Question 17

An object is placed in front of a concave mirror. The object is farther from the mirror than the focal length of the mirror. The type of image reflected from the mirror is __________ and the orientation of the image is ___________.

Accepted Answer

The answer of An object is placed in front of...

Question 18

The unaided nearsighted human eye focuses light from a distant object

Accepted Answer

A)  in front of the retina. 
B)  on the retina. 
C)  behind the retina. 
D)  acceptably but is too short for the focusing power of the cornea. 
A)  in front of the retina. 
B)  on the retina. 
C)  behind the retina. 
D)  acceptably but is too short for the focusing power of the cornea.

Question 19

The focal point of a lens is determined by

Accepted Answer

A)  the shape of the two surfaces of the lens. 
B)  the index of refraction of the lens material. 
C)  only the shape if you have a negative lens, otherwise only the index of refraction. 
D)  both shape and index of refraction. 
A)  the shape of the two surfaces of the lens. 
B)  the index of refraction of the lens material. 
C)  only the shape if you have a negative lens, otherwise only the index of refraction. 
D)  both shape and index of refraction.

Question 20

The rearview mirror of an auto bears the legend "Objects in mirror are closer than they appear." This mirror is a ______ mirror.

Accepted Answer

A)  plane 
B)  concave 
C)  convex 
D)  converging 
A)  plane 
B)  concave 
C)  convex 
D)  converging

The cornea of the human eye is an example of a

The image formed by a concave mirror when the object distance is greater than the focal length is always

A woman 1.6 m in height wants a plane mirror so that she can view her full height. The minimum vertical size of such a mirror is

A beam of white light in air passes through the transparent object shown. Dispersion is observed to occur. From the diagram we can tell that

Convex (converging) lenses are worn by

Rays from a distant object do not diverge enough for a nearsighted person to focus; this can be corrected with a

If the image formed by a concave mirror is closer to the mirror than the object is, then, compared to the object, the image will be

When light is reflected from a smooth, plane mirror

An iPod is 20 cm in front of a flat mirror. You see the reflected image and must refocus your eye, perhaps even take off your eyeglasses, because

Light enters water (n = 1.33) from air. The incident light ray makes a 0.44 $\degree$ angle with the normal to the surface on the air side. What will be the angle made with the normal by the refracted ray on the water side?

Lenses can be used to focus sunlight to a small point to burn paper or dry brush. A person demonstrates this using their own eyeglasses as the lenses. From this you can tell that

The magnification produced by a plane mirror is ____________ (sign and magnitude).

When one observes a scratch on the bottom of a block of clear plastic, the scratch appears to be 2.5 cm below the top surface as viewed from above. The actual thickness of the plastic block is 3.0 cm. The index of refraction of the block is ______________.

A 1 cm object is placed 20 cm from a lens. The lens forms a real and inverted image of size 1.5 cm. What is the focal length of the lens?

A ray of light traveling in a calm pond strikes the surface at an angle of incidence which is 2 $\degree$ larger than the critical angle. This ray will

An object is placed in front of a concave mirror. The object is farther from the mirror than the focal length of the mirror. The type of image reflected from the mirror is and the orientation of the image is _.

The unaided nearsighted human eye focuses light from a distant object

The focal point of a lens is determined by

The rearview mirror of an auto bears the legend "Objects in mirror are closer than they appear." This mirror is a ______ mirror.

Physics, the Fundamental Science

Describing Motion

Falling Objects and Projectile Motion

Newtons Laws: Explaining Motion

Circular Motion, the Planets, and Gravity

Energy and Oscillations

Momentum and Impulse

Rotational Motion of Solid Objects

The Behavior of Fluids

Temperature and Heat

Heat Engines and the Second Law of Thermodynamics

Electrostatic Phenomena

Electric Circuits

Magnets and Electromagnetism

Making Waves

Light Waves and Color

The Structure of the Atom

The Nucleus and Nuclear Energy

Relativity

Beyond Everyday Phenomena

Filters

Exam 17: Light and Image Formation

The cornea of the human eye is an example of a

The image formed by a concave mirror when the object distance is greater than the focal length is always

A woman 1.6 m in height wants a plane mirror so that she can view her full height. The minimum vertical size of such a mirror is

A beam of white light in air passes through the transparent object shown. Dispersion is observed to occur. From the diagram we can tell that

Convex (converging) lenses are worn by

Rays from a distant object do not diverge enough for a nearsighted person to focus; this can be corrected with a

If the image formed by a concave mirror is closer to the mirror than the object is, then, compared to the object, the image will be

When light is reflected from a smooth, plane mirror

An iPod is 20 cm in front of a flat mirror. You see the reflected image and must refocus your eye, perhaps even take off your eyeglasses, because

Light enters water (n = 1.33) from air. The incident light ray makes a 0.44 °\degree° angle with the normal to the surface on the air side. What will be the angle made with the normal by the refracted ray on the water side?

Lenses can be used to focus sunlight to a small point to burn paper or dry brush. A person demonstrates this using their own eyeglasses as the lenses. From this you can tell that

The magnification produced by a plane mirror is ____________ (sign and magnitude).

Rays of light traveling through different media hit the boundary between the media and the air. The angle of incidence is the same in each case. Which medium has the largest index of refraction?

When one observes a scratch on the bottom of a block of clear plastic, the scratch appears to be 2.5 cm below the top surface as viewed from above. The actual thickness of the plastic block is 3.0 cm. The index of refraction of the block is ______________.

A 1 cm object is placed 20 cm from a lens. The lens forms a real and inverted image of size 1.5 cm. What is the focal length of the lens?

A ray of light traveling in a calm pond strikes the surface at an angle of incidence which is 2 °\degree° larger than the critical angle. This ray will

An object is placed in front of a concave mirror. The object is farther from the mirror than the focal length of the mirror. The type of image reflected from the mirror is __________ and the orientation of the image is ___________.

The unaided nearsighted human eye focuses light from a distant object

The focal point of a lens is determined by

The rearview mirror of an auto bears the legend "Objects in mirror are closer than they appear." This mirror is a ______ mirror.

Physics, the Fundamental Science

Describing Motion

Falling Objects and Projectile Motion

Newtons Laws: Explaining Motion

Circular Motion, the Planets, and Gravity

Energy and Oscillations

Momentum and Impulse

Rotational Motion of Solid Objects

The Behavior of Fluids

Temperature and Heat

Heat Engines and the Second Law of Thermodynamics

Electrostatic Phenomena

Electric Circuits

Magnets and Electromagnetism

Making Waves

Light Waves and Color

The Structure of the Atom

The Nucleus and Nuclear Energy

Relativity

Beyond Everyday Phenomena

Filters

Light enters water (n = 1.33) from air. The incident light ray makes a 0.44 $\degree$ angle with the normal to the surface on the air side. What will be the angle made with the normal by the refracted ray on the water side?

A ray of light traveling in a calm pond strikes the surface at an angle of incidence which is 2 $\degree$ larger than the critical angle. This ray will

An object is placed in front of a concave mirror. The object is farther from the mirror than the focal length of the mirror. The type of image reflected from the mirror is and the orientation of the image is _.