Exam 15: Quantum Theory

Which color of light carries the most energy per photon?

Two beams of light, a red beam and a blue beam, have the same energy. The beam with the greater number of photons is the

Which experiment best demonstrates the particle-like nature of light?

A lump of energy associated with light is called a

A new theory conforms to the correspondence principle when it

If atoms were smaller, Planck's constant would be

A photosensitive surface is illuminated with both blue and violet light. The light that will cause the most electrons to be ejected is the

Helium was first discovered in the

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

Atoms can be excited by

In the double-slit experiment with electrons, the electrons arrive at the screen in a

The main reason electrons occupy discrete orbits in an atom is because

In the Bohr model of hydrogen, discrete radii and energy states result when an electron circles the atom in an integral number of

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

An atom that absorbs a photon of a certain energy can then emit

Which of the following is not quantized?

Light is emitted when an electron

Light behaves primarily as a wave when it

Astronomers can tell whether a star is approaching or receding from earth by

Light frequency from an incandescent lamp depends on the