Quantum Theory

Quanta of light energy is called

• Phonon

• Photon

• Electron

• Proton

Tags

NGSS.HS-PS4-3

In the equation E  =  nhf, which of the following is not a possible value of n?

• a. 1

• b. 3

• c. 5/4

• d. 6

Tags

NGSS.HS-PS4-1

The de Broglie wave equation showed that the wavelength of any moving object is equal to

• c = hv

• h/mv

• E = hv

• hmv/J

Tags

NGSS.HS-PS4-1

NGSS.HS-PS4-3

For an electron to change from ground state to an excited state it must...

• Absorb energy

• Release energy

Tags

NGSS.HS-PS1-2

The wave-particle duality of light describes light as...

• a wave only

• a particle only

• both a wave and a particle

• neither a wave nor a particle

Tags

NGSS.HS-PS4-3

Photoelectric effect provides the evidence for the ______ nature of radiation.

• wave

• particle

• dual

• electromagnetic

Tags

NGSS.HS-PS4-3

The energy of a photon is directly proportional to its ______ and inversely proportional to its ______.

• intensity - speed

• wavelength - frequency

• frequency - wavelength

• intensity - wavelength

Tags

NGSS.HS-PS4-1

A particle of light is called a……

• Photon

• Photoelectron

• Proton

• Electron

Tags

NGSS.HS-PS4-3

what 'h' stands for

• Boltzmann constant

• Speed of light

• Avogadro number

• Planck's constant

He developed the planetary model of the atom.

• Rutherford

• Bohr

• Chadwick

• Dalton