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%

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

a dark fringe is produced

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

are the same.

The polarization axes of glasses for 3-D viewing are

at right angles to each other.

Diffraction is evident when a wave passes the edge of an object. through a small opening.

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.

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.

For radio reception in city buildings, diffraction is

helpful.

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.

Newton's rings illustrate

interference.

Waves diffract the most when their wavelength is

long

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.

The production of interference colors requires

none of the above

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.

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.

Interference is a property of

sound, light, and water 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.