Physics Ch. 29

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

50%

Radio waves that diffract more around small buildings are

AM

Interference is a property of

All of these

Monochromatic light is light of a single

All of these

Superposition of waves can produce

All of these

Three-dimensional viewing normally involves

All of these

The production of interference colors requires

None of these

Some double-pane airplane windows darken when the inner pane is rotated. The panes are

Polaroid filters.

When waves from a pair of closely-spaced slits arrive in phase

a bright fringe is produced.

When waves from a pair of closely-spaced slits arrive out of phase

a dark fringe is produced.

When you view color in a soap film with sunlight in back of you, a friend on the other side of the soap film likely sees

a different color.

For viewing tiny objects in a microscope, diffraction is

a hindrance.

The superposition of identical waves affects

amplitude.

Diffraction is least when illumination is with

an electron beam

The function of polarizing filters in viewing 3-D slides or movies is to provide each eye

an independent left or right-eye view.

Secondary wavelets spread from a wave with

an unchanging speed.

The vibrational direction of an electron and the plane of polarization of the light it emits

are the same.

Interference effects are less visible for thick films because the reflected waves

are too displaced to interfere.

Light travels through non-cubic transparent crystals

at different speeds along different optic axes.

The polarization axes of glasses for 3-D viewing are

at right angles to each other.

According to Huygens' principle, every point on a wave

behaves as a source of new waves.

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

between 0% and 40%.

A thin film appears yellow when illuminated with white light. The color being cancelled by destructive interference is

blue

Newton's rings will be closer together if illuminated with

blue light.

Diffraction is evident when a wave passes

both of these

Holograms employ the principle of

both of these

Huygens' principle applies mainly to

both of these

Interference colors in a soap bubble is evidence that the soap film

both of these

A hologram is simply a

complex diffraction grating.

Successive bright fringes in an interference pattern result from

distance from the slits successively increasing one wavelength at a time.

Light will pass through a pair of Polaroids when their axes are

either of these

The device that spreads light into its component colors in a spectroscope is a

either of these

Plane waves incident upon a barrier that pass through a small opening

fan out

A thin film appears magenta when illuminated with white light. The color being cancelled by destructive interference is

green

For radio reception in city buildings, diffraction is

helpful

A dolphin perceives greater detail by emitting sounds of

higher frequency.

The glare seen from water is largely

horizontally polarized.

A pair of crossed Polaroids will transmit light

if a third Polaroid at about 45 degrees is inserted between the two.

Light from two closely-spaced stars cannot produce a steady interference pattern due to

incoherence

Colors seen when gasoline forms a thin film on water illustrate

interference

Diffraction is most closely related to

interference

Iridescent colors in the pearly luster of an abalone shell are due to

interference

Newton's rings illustrate

interference

The amount of light from an incandescent lamp that is transmitted through an ideal Polaroid filter is half, and through a classroom Polaroid filter is

less than half.

For a pair of Polaroids with axes at 45 degrees to each other

light that passes is dimmer than for a parallel orientation.

Diffraction from foghorns is best if the waves being diffracted are

long

Waves diffract the most when their wavelength is

long

Magnification can be accomplished with a hologram when viewed with light that has a

longer wavelength than the original light.

In the double-slit experiment, fringes are more widely spaced when illumination is with monochromatic

low-frequency light.

A razor blade nicely shows diffraction fringes when illuminated with

monochromatic light.

Three-dimensional viewing was popular in the past with slide projectors. If the slides for left and right positions in the stereo projector are duplicates of each other

no depth can be seen.

Light emitted by the Sun is

nonpolarized

An inventor proposes to equip an office with a polarized source of background music and polarizing earplugs for non-listeners. His idea is

nonsense because sound cannot be polarized.

A painting looks less flat when viewed with

one eye

Light will NOT pass through a pair of Polaroids when their axes are

perpendicular

Which of the following is a property of light waves and NOT of sound waves?

polarization

A thin film appears cyan when illuminated with white light. The color being cancelled by destructive interference is

red

Consider the interference colors in a film of gasoline on a wet street. The water provides a

second reflecting surface.

When long-wavelength light is seen in the interference colors of a soap bubble, the wavelength being cancelled is relatively

short

The fanning out of waves upon passing through an opening is more pronounced through

small openings.

Polarization is a property of

transverse waves.

What can exist in the same place at the same time?

two waves

Polaroid sunglasses reduce much glare by polarization axes that are

vertical

Thomas Young's two-source interference patterns demonstrate the

wave nature of light.

Parallax is evident when you view objects

with both eyes.