Question 1

The angle between a horizontal ruler and a vertical plane mirror is 30°.The angle between the ruler and its image is:

Accepted Answer

A) 15° 
B) 30° 
C) 60° 
D) 90° 
E) 180° 
A) 15° 
B) 30° 
C) 60° 
D) 90° 
E) 180°

Question 2

The objective lens of the Yerkes telescope (the largest functioning refracting telescope in the world)has a focal length of 19.4 m.If its eyepiece has a focal length of 2.5 cm, what is the magnitude of its magnification?

Accepted Answer

A) 7.8 
B) 13 
C) 130 
D) 780 
E) cannot be calculated without knowing the length of the telescope 
A) 7.8 
B) 13 
C) 130 
D) 780 
E) cannot be calculated without knowing the length of the telescope

Question 3

A converging lens of focal length 20 cm is placed in contact with, and to the left of, a diverging lens of focal length 30 cm.If an object is placed 40 cm to the left of the converging lens, the total magnification is:

Accepted Answer

A) -3.0 
B) -1.5 
C) -1.0 
D) 2.0 
E) 3.0 
A) -3.0 
B) -1.5 
C) -1.0 
D) 2.0 
E) 3.0

Question 4

In a compound microscope, the objective has a focal length of 1.0 cm, the eyepiece has a focal length of 2.0 cm, and the tube length is 25 cm.What is the magnitude of the overall magnification of the microscope?

Accepted Answer

A) 25 
B) 50 
C) 100 
D) 250 
E) 310 
A) 25 
B) 50 
C) 100 
D) 250 
E) 310

Question 5

The focal length of a spherical mirror is N times its radius of curvature where N is:

Accepted Answer

A) 1/4 
B) 1/2 
C) 1 
D) 2 
E) 4 
A) 1/4 
B) 1/2 
C) 1 
D) 2 
E) 4

Question 6

A point source is to be used with a concave mirror to produce a beam of parallel light.The source should be placed:

Accepted Answer

A) as close to the mirror as possible 
B) at the center of curvature 
C) midway between the center of curvature and the focal point 
D) midway between the center of curvature and the mirror 
E) midway between the focal point and the mirror 
A) as close to the mirror as possible 
B) at the center of curvature 
C) midway between the center of curvature and the focal point 
D) midway between the center of curvature and the mirror 
E) midway between the focal point and the mirror

Question 7

A man holds a rectangular card in front of and parallel to a plane mirror.In order for him to see the entire image of the card, the least mirror area needed is:

Accepted Answer

A) that of the whole mirror, regardless of its size 
B) that of the pupil of his eye 
C) one-half that of the card 
D) one-fourth that of the card 
E) an amount which decreases with his distance from the mirror 
A) that of the whole mirror, regardless of its size 
B) that of the pupil of his eye 
C) one-half that of the card 
D) one-fourth that of the card 
E) an amount which decreases with his distance from the mirror

Question 8

A concave refracting surface is one with a center of curvature:

Accepted Answer

A) to the left of the surface 
B) to the right of the surface 
C) on the side of the incident light 
D) on the side of the refracted light 
E) on the side with the higher index of refraction 
A) to the left of the surface 
B) to the right of the surface 
C) on the side of the incident light 
D) on the side of the refracted light 
E) on the side with the higher index of refraction

Question 9

A convex refracting surface has a radius of 12 cm.Light is incident in air (n = 1)and refracted into a medium with an index of refraction of 2.Light incident parallel to the central axis is focused at a point:

Accepted Answer

A) 3 cm from the surface 
B) 6 cm from the surface 
C) 12 cm from the surface 
D) 18 cm from the surface 
E) 24 cm from the surface 
A) 3 cm from the surface 
B) 6 cm from the surface 
C) 12 cm from the surface 
D) 18 cm from the surface 
E) 24 cm from the surface

Question 10

A candle C sits between two parallel mirrors, a distance 0.2d from mirror 1.Here d is the distance between the mirrors.Multiple images of the candle appear in both mirrors.How far behind mirror 1 are the nearest three images of the candle in that mirror?

Accepted Answer

A) 0.2d, 1.8d, 2.2d 
B) 0.2d, 2.2d, 4.2d 
C) 0.2d, 1.8d, 3.8d 
D) 0.2d, 0.8d, 1.4d 
E) 0.2d, 1.8d, 3.4d 
A) 0.2d, 1.8d, 2.2d 
B) 0.2d, 2.2d, 4.2d 
C) 0.2d, 1.8d, 3.8d 
D) 0.2d, 0.8d, 1.4d 
E) 0.2d, 1.8d, 3.4d

Question 11

A light bulb burns in front of the center of a 40-cm wide mirror that is hung vertically on a wall.A man walks in front of the mirror along a line that is parallel to the mirror and twice as far from it as the bulb.The greatest distance he can walk and see the image of the bulb at all times is:

Accepted Answer

A) 20 cm 
B) 40 cm 
C) 60 cm 
D) 80 cm 
E) 120 cm 
A) 20 cm 
B) 40 cm 
C) 60 cm 
D) 80 cm 
E) 120 cm

Question 12

A concave mirror forms a real image which is twice the size of the object.If the object is 20 cm from the mirror, the radius of curvature of the mirror must be about:

Accepted Answer

A) 13 cm 
B) 20 cm 
C) 27 cm 
D) 40 cm 
E) 80 cm 
A) 13 cm 
B) 20 cm 
C) 27 cm 
D) 40 cm 
E) 80 cm

Question 13

A man stands with his nose 8 cm from a concave shaving mirror of radius 32 cm.The distance from the mirror to the image of his nose is:

Accepted Answer

A) 8 cm 
B) 12 cm 
C) 16 cm 
D) 24 cm 
E) 32 cm 
A) 8 cm 
B) 12 cm 
C) 16 cm 
D) 24 cm 
E) 32 cm

Question 14

The bellows of an adjustable camera can be extended so that the largest film to lens distance is one and one-half times the focal length.If the focal length is 12 cm, the nearest object which can be sharply focused on the film must be what distance from the lens?

Accepted Answer

A) 12 cm 
B) 24 cm 
C) 36 cm 
D) 48 cm 
E) 72 cm 
A) 12 cm 
B) 24 cm 
C) 36 cm 
D) 48 cm 
E) 72 cm

Question 15

Which type(s)of lenses can produce both real and virtual images?

Accepted Answer

A) only diverging lenses 
B) only converging lenses 
C) only plane lenses 
D) both converging and diverging lenses 
E) neither converging nor diverging lenses 
A) only diverging lenses 
B) only converging lenses 
C) only plane lenses 
D) both converging and diverging lenses 
E) neither converging nor diverging lenses

Question 16

Where must an object be placed in front of a converging lens in order to obtain a virtual image?

Accepted Answer

A) At the focal point 
B) At twice the distance to the focal point 
C) Anywhere beyond the focal point 
D) Between the focal point and the lens 
E) Between the focal point and twice the distance to the focal point 
A) At the focal point 
B) At twice the distance to the focal point 
C) Anywhere beyond the focal point 
D) Between the focal point and the lens 
E) Between the focal point and twice the distance to the focal point

Question 17

A convex spherical refracting surface separates a medium with index of refraction 2 from air.The image of an object outside the surface is real:

Accepted Answer

A) always 
B) never 
C) only if it is close to the surface 
D) only if its distance from the surface is large compared to the radius of curvature 
E) only if the radius of curvature is small 
A) always 
B) never 
C) only if it is close to the surface 
D) only if its distance from the surface is large compared to the radius of curvature 
E) only if the radius of curvature is small

Question 18

An erect object is located on the central axis of a spherical mirror.The magnification is -3.This means its image is:

Accepted Answer

A) real, inverted, and on the same side of the mirror 
B) virtual, erect, and on the opposite side of the mirror 
C) real, erect, and on the same side of the mirror 
D) real, inverted, and on the opposite side of the mirror 
E) virtual, inverted, and on the opposite side of the mirror 
A) real, inverted, and on the same side of the mirror 
B) virtual, erect, and on the opposite side of the mirror 
C) real, erect, and on the same side of the mirror 
D) real, inverted, and on the opposite side of the mirror 
E) virtual, inverted, and on the opposite side of the mirror

Question 19

An erect object is in front of a convex mirror a distance greater than the focal length.The image is:

Accepted Answer

A) real, inverted, and smaller than the object 
B) virtual, inverted, and larger than the object 
C) real, inverted, and larger than the object 
D) virtual, erect, and smaller than the object 
E) real, erect, and larger than the object 
A) real, inverted, and smaller than the object 
B) virtual, inverted, and larger than the object 
C) real, inverted, and larger than the object 
D) virtual, erect, and smaller than the object 
E) real, erect, and larger than the object

Question 20

A hollow lens is made of thin glass as shown.It can be filled with air, water (n = 1.3)or CS2 (carbon disulfide, n = 1.6).A beam of parallel light entering the lens will diverge if the lens is filled with:

Accepted Answer

A) air and immersed in air 
B) air and immersed in water 
C) water and immersed in CS2 
D) CS2 and immersed in water 
E) CS2 and immersed in CS2 
A) air and immersed in air 
B) air and immersed in water 
C) water and immersed in CS2 
D) CS2 and immersed in water 
E) CS2 and immersed in CS2

Exam 34: Images

The angle between a horizontal ruler and a vertical plane mirror is 30°.The angle between the ruler and its image is:

The objective lens of the Yerkes telescope (the largest functioning refracting telescope in the world)has a focal length of 19.4 m.If its eyepiece has a focal length of 2.5 cm, what is the magnitude of its magnification?

A converging lens of focal length 20 cm is placed in contact with, and to the left of, a diverging lens of focal length 30 cm.If an object is placed 40 cm to the left of the converging lens, the total magnification is:

In a compound microscope, the objective has a focal length of 1.0 cm, the eyepiece has a focal length of 2.0 cm, and the tube length is 25 cm.What is the magnitude of the overall magnification of the microscope?

The focal length of a spherical mirror is N times its radius of curvature where N is:

A point source is to be used with a concave mirror to produce a beam of parallel light.The source should be placed:

A man holds a rectangular card in front of and parallel to a plane mirror.In order for him to see the entire image of the card, the least mirror area needed is:

A concave refracting surface is one with a center of curvature:

A convex refracting surface has a radius of 12 cm.Light is incident in air (n = 1)and refracted into a medium with an index of refraction of 2.Light incident parallel to the central axis is focused at a point:

A candle C sits between two parallel mirrors, a distance 0.2d from mirror 1.Here d is the distance between the mirrors.Multiple images of the candle appear in both mirrors.How far behind mirror 1 are the nearest three images of the candle in that mirror?

A light bulb burns in front of the center of a 40-cm wide mirror that is hung vertically on a wall.A man walks in front of the mirror along a line that is parallel to the mirror and twice as far from it as the bulb.The greatest distance he can walk and see the image of the bulb at all times is:

A concave mirror forms a real image which is twice the size of the object.If the object is 20 cm from the mirror, the radius of curvature of the mirror must be about:

A man stands with his nose 8 cm from a concave shaving mirror of radius 32 cm.The distance from the mirror to the image of his nose is:

The bellows of an adjustable camera can be extended so that the largest film to lens distance is one and one-half times the focal length.If the focal length is 12 cm, the nearest object which can be sharply focused on the film must be what distance from the lens?

Which type(s)of lenses can produce both real and virtual images?

Where must an object be placed in front of a converging lens in order to obtain a virtual image?

A convex spherical refracting surface separates a medium with index of refraction 2 from air.The image of an object outside the surface is real:

An erect object is located on the central axis of a spherical mirror.The magnification is -3.This means its image is:

An erect object is in front of a convex mirror a distance greater than the focal length.The image is:

A hollow lens is made of thin glass as shown.It can be filled with air, water (n = 1.3)or CS2 (carbon disulfide, n = 1.6).A beam of parallel light entering the lens will diverge if the lens is filled with:

Measurement

Motion Along a Straight Line

Vectors

Motion in Two and Three Dimensions

Force and Motion

Force and Motion

Kinetic Energy and Work

Potential Energy and Conservation of Energy

Center of Mass and Linear Momentum

Rotation

Rolling, Torque, and Angular Momentum

Equilibrium and Elasticity

Gravitation

Fluids

Oscillations

Waves

Waves

Temperature, Heat, and the First Law of Thermodynamics

The Kinetic Theory of Gases

Entropy and the Second Law of Thermodynamics

Coulombs Law

Electric Fields

Gauss Law

Electric Potential

Capacitance

Current and Resistance

Circuits

Magnetic Fields

Magnetic Fields Due to Currents

Induction and Inductance

Electromagnetic Oscillations and Alternating Current

Maxwells Equations; Magnetism of Matter

Electromagnetic Waves

Interference 1

Diffraction

Relativity

Photons and Matter Waves

More About Matter Waves

All About Atoms

Conduction of Electricity in Solids

Energy From the Nucleus

Quarks, Leptons, and the Big Bang

Filters

A hollow lens is made of thin glass as shown.It can be filled with air, water (n = 1.3)or CS₂ (carbon disulfide, n = 1.6).A beam of parallel light entering the lens will diverge if the lens is filled with: