Phys108 Test3

A hypothetical atom has four distinct energy states. Assuming all transitions are possible, how many spectral lines can this atom produce

6

Monochromatic light directed at 2 closely spaced slits produces

Dark fringe

The planetary model of the atom helps us understand light

Emission

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

Has two reflecting surfaces & Is thin

For radio reception, diffraction is

Helpful

Diffraction is less pronounced through relatively

Large openings

Light is emitted when an electron

Makes a transition to a lower energy level

Compared to the energy of a photon of red light, the energy of a photon of blue light is

More ROYGBV

All of the light that passes through one Polaroid will pass through a second Polaroid with an axis

Parallel to the first

The ratio of the energy of a photon to its frequency is

Planck's constant

Unpolarized light shined on a Polaroid

Shines 50% of the light

According to Huygen's Principle, wave fronts are

The overlapped crests of tiny secondary waves

We understand polarization and interference

Through the wave model

Polarization is a property of

Transverse waves

The polarization axes of ordinary sunglasses are

Vertical

Interference is a property of

Water, light, & sound waves

Magenta is seen at one place on a soap film. At a slightly thinner region of the film, one would likely see the color

Yellow

An emission spectrum is characterized by

a set of discrete frequencies

A rainbow or incondescent spectrum is characterized by

a smooth, continuous pattern of a range of frequencies

A new theory conforms to the correspondence principle when it

accounts for verified results of the old theory. EX: Newton Mechanics and Quantum Mechanics

An atom that emits a certain frequency of light is

an absorber of the same frequency

The main visible difference between phosphorescent and fluorescent materials is

an afterglow

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

are too displaced to interfere.

Electrons in an atom must be able to occupy metastable states in order for

both a laser to work and phosphorescence to occur

A beam of electrons has

both particle properties and wave properties

A paint pigment that absorbs red light and gives off blue light

doesn't exist

Heavy atoms are not appreciably larger in size than light atoms because the nuclei of heavy atoms have more

electric charge

A beam of monochromatic light consists of photons with the same

frequency

A beam of coherent light such as a laser consists of photons with the same

frequency, phase, and direction

The radiation curve for a "White Hot" object peaks in the

green region

Light is absorbed when an electron

is boosted to a higher energy level

According to the uncertainty principle, the more we know about a particle's momentum. the less we know about its

location

A certain object emits ultraviolet waves. If it were to emit visible light waves instead, its temperature would be

lower

Cyan is seen at one place on a soap bubble film. At a slightly thinner region of the film, one would likely see the color

magenta

The Bohr model of the atom is akin to a

miniature solar system

In the photoelectric effect, the brighter the illuminating light on a photosensitive surface, the greater the

number of ejected electrons

A condition necessary for absorption spectra to exist is that

partially absorbent material exist between the light source and spectroscope

The Schrodinger equation of quantum mechanics deals with two mathematical entities. the wave function describes where a particle ____ and the probability density function describes where a particle _____

possibly is; probably is

Laser light

produces a bright fringe

Waves diffract the least when their wavelength is

short

A bullet and a proton have the same speed but the one with the greater momentum and mass is

the bullet

A bullet and a proton have the same speed but the one with the longer wavelength is

the proton

Light behaves primarily as a wave when it

travels from one place to another

Fluorescent materials on display in museums are illuminated with

ultraviolet light

Blue hot peaks in the

ultraviolet region

Which color of light carries the most energy per photon?

violet

In the E=hf, the f stands for

wave frequency as defined for sound, radio, and light waves

The discreteness of energy levels is better understood by considering the electrons to be

waves (none of these)