Question 1

The image seen in a plane mirror is due to

Accepted Answer

A) specular reflection. 
B) diffuse reflection. 
C) both of these 
D) neither of these 
A) specular reflection. 
B) diffuse reflection. 
C) both of these 
D) neither of these

Question 2

Both a radio wave and light wave have identical

Accepted Answer

A) speeds. 
B) wavelengths. 
C) frequencies. 
D) all of the above 
E) none of the above 
A) speeds. 
B) wavelengths. 
C) frequencies. 
D) all of the above 
E) none of the above

Question 3

Distant dark-colored hills appear blue due to the color of the

Accepted Answer

A) atmosphere between the observer and the dark hills. 
B) selectively reflected light that reaches a distant observer. 
C) reflected light that survives scattering. 
D) sky that is reflected off the hills. 
A) atmosphere between the observer and the dark hills. 
B) selectively reflected light that reaches a distant observer. 
C) reflected light that survives scattering. 
D) sky that is reflected off the hills.

Question 4

A sound wave and a light wave have identical

Accepted Answer

A) speeds. 
B) wavelengths. 
C) frequencies. 
D) all of the above 
E) none of the above 
A) speeds. 
B) wavelengths. 
C) frequencies. 
D) all of the above 
E) none of the above

Question 5

Why does a swimmer under water see the color of seawater as greenish blue?

Accepted Answer

Water is a strong absorber of infrared r

Question 6

Visible light that shines on a pane of transparent glass

Accepted Answer

A) is mostly reflected. 
B) produces a chain of absorptions and re-emissions through the glass. 
C) mostly transforms to thermal energy. 
A) is mostly reflected. 
B) produces a chain of absorptions and re-emissions through the glass. 
C) mostly transforms to thermal energy.

Question 7

Distant snow-covered hills appear yellowish due to the color of the

Accepted Answer

A) atmosphere between the observer and the hills. 
B) selectively reflected light that reaches a distant observer. 
C) reflected light that survives scattering. 
D) sky that is reflected off the hills. 
A) atmosphere between the observer and the hills. 
B) selectively reflected light that reaches a distant observer. 
C) reflected light that survives scattering. 
D) sky that is reflected off the hills.

Question 8

The inks used in printing the full-color photos in a common magazine are

Accepted Answer

A) red,green,and blue. 
B) red,green,blue,and black. 
C) magenta,cyan,and yellow. 
D) magenta,cyan,yellow,and black. 
E) none of the above 
A) red,green,and blue. 
B) red,green,blue,and black. 
C) magenta,cyan,and yellow. 
D) magenta,cyan,yellow,and black. 
E) none of the above

Question 9

Infrared waves are often called heat waves because they

Accepted Answer

A) emanate from relatively hot sources. 
B) consist of frequencies lower than those of visible light. 
C) induce resonance of molecules in the skin that becomes thermal energy. 
D) are absorbed rather than reflected by the skin. 
E) are the predominant waves emitted by the Sun. 
A) emanate from relatively hot sources. 
B) consist of frequencies lower than those of visible light. 
C) induce resonance of molecules in the skin that becomes thermal energy. 
D) are absorbed rather than reflected by the skin. 
E) are the predominant waves emitted by the Sun.

Question 10

An ideal Polaroid will transmit 50% of nonpolarized incident light.How much light is transmitted by two ideal Polaroids oriented with their axes parallel to each other?

Accepted Answer

A) 0% 
B) 50% 
C) 100% 
D) between 0% and 50% 
E) between 50% and 100% 
A) 0% 
B) 50% 
C) 100% 
D) between 0% and 50% 
E) between 50% and 100%

Question 11

Because of refraction,a person standing waist deep in a swimming pool appears to have

Accepted Answer

A) shorter legs. 
B) longer legs. 
C) thinner legs. 
D) none of the above 
A) shorter legs. 
B) longer legs. 
C) thinner legs. 
D) none of the above

Question 12

Radio waves travel

Accepted Answer

A) always much faster than sound waves. 
B) usually at the same speed as sound waves. 
C) slower,on average,than sound waves. 
D) at a speed that depends on frequency. 
A) always much faster than sound waves. 
B) usually at the same speed as sound waves. 
C) slower,on average,than sound waves. 
D) at a speed that depends on frequency.

Question 13

Because most reflecting surfaces are horizontal,the polarization axes of ordinary sunglasses are

Accepted Answer

A) vertical. 
B) horizontal. 
C) at right angles to each other. 
A) vertical. 
B) horizontal. 
C) at right angles to each other.

Question 14

Which interacts more with light of relatively high frequencies?

Accepted Answer

A) large particles 
B) small particles 
C) both the same 
A) large particles 
B) small particles 
C) both the same

Question 15

Because of absorption,a Polaroid will actually transmit about 40% of incident nonpolarized light.Two Polaroids with their axes aligned will transmit

Accepted Answer

A) 0%. 
B) 40%. 
C) 100%. 
D) between 0% and 40%. 
E) between 40% and 100%. 
A) 0%. 
B) 40%. 
C) 100%. 
D) between 0% and 40%. 
E) between 40% and 100%.

Question 16

On a TV screen,red,green,and blue spots of light produce a full spectrum of colors.What spots are activated to produce yellow? Red? Magenta? White?

Accepted Answer

Yellow is produced by simultan

Question 17

If the atmosphere were about 40 times thicker,at noon the Sun would appear

Accepted Answer

A) red-orange. 
B) orange-green. 
C) green-blue. 
D) blue-violet. 
E) none of the above 
A) red-orange. 
B) orange-green. 
C) green-blue. 
D) blue-violet. 
E) none of the above

Question 18

If a light signal and a radio signal were emitted simultaneously from Alpha Centauri,the first to reach Earth would be the

Accepted Answer

A) radio signal. 
B) light signal. 
C) both the same time 
A) radio signal. 
B) light signal. 
C) both the same time

Question 19

Consider light energy that is momentarily absorbed in glass and then reemitted.Relative to the absorbed light,the frequency of the reemitted light is

Accepted Answer

A) less. 
B) the same. 
C) more. 
A) less. 
B) the same. 
C) more.

Question 20

Diffuse reflection occurs when the size of surface irregularities is

Accepted Answer

A) small compared to the wavelength of the light used. 
B) large compared to the wavelength of the light used. 
C) either 
A) small compared to the wavelength of the light used. 
B) large compared to the wavelength of the light used. 
C) either

Exam 11: Light

The image seen in a plane mirror is due to

Both a radio wave and light wave have identical

Distant dark-colored hills appear blue due to the color of the

A sound wave and a light wave have identical

Why does a swimmer under water see the color of seawater as greenish blue?

Visible light that shines on a pane of transparent glass

Distant snow-covered hills appear yellowish due to the color of the

The inks used in printing the full-color photos in a common magazine are

Infrared waves are often called heat waves because they

An ideal Polaroid will transmit 50% of nonpolarized incident light.How much light is transmitted by two ideal Polaroids oriented with their axes parallel to each other?

Because of refraction,a person standing waist deep in a swimming pool appears to have

Radio waves travel

Because most reflecting surfaces are horizontal,the polarization axes of ordinary sunglasses are

Which interacts more with light of relatively high frequencies?

Because of absorption,a Polaroid will actually transmit about 40% of incident nonpolarized light.Two Polaroids with their axes aligned will transmit

On a TV screen,red,green,and blue spots of light produce a full spectrum of colors.What spots are activated to produce yellow? Red? Magenta? White?

If the atmosphere were about 40 times thicker,at noon the Sun would appear

If a light signal and a radio signal were emitted simultaneously from Alpha Centauri,the first to reach Earth would be the

Consider light energy that is momentarily absorbed in glass and then reemitted.Relative to the absorbed light,the frequency of the reemitted light is

Diffuse reflection occurs when the size of surface irregularities is

Patterns of Motion and Equilibrium

Newtons Laws of Motion

Momentum and Energy

Gravity, Projectiles, and Satellites

Fluid Mechanics

Thermal Energy and Thermodynamics

Heat Transfer and Change of Phase

Static and Current Electricity

Magnetism and Electromagnetic Induction

Waves and Sound

Atoms and the Periodic Table

The Atomic Nucleus and Radioactivity

Elements of Chemistry

How Atoms Bond and Molecules Attract

Mixtures

How Chemicals React

Two Classes of Chemical Reactions

Organic Compounds

Rocks and Minerals

Plate Tectonics and Earths Interior

Shaping Earths Surface

Geologic Time - Reading the Rock Record

The Oceans, Atmosphere, and Climatic Effects

Driving Forces of Weather

The Solar System

Stars and Galaxies

The Structure of Space and Time

Prologue: The Nature of Science

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