De Broglie Wavelength

Energy of the photon can be represented by

•  $h\nu c$  

•  $\frac{hc}{\lambda}$  

•  $hc\lambda$  

•  $h\nu$  

The momentum of a photon is p, the corresponding wavelength is ____________

•  $\frac{4}{p}$  

•  $\frac{p}{h}$  

•  $ph$  

•  $\frac{h}{p}$  

The equation of motion of matter waves was derived by

• Heisenberg

• Bohr

• De Broglie

• Schrodinger

Calculate de-Broglie wavelength of an electron moving with velocity  $10^7$  m/s.

•  $10\ A^{\degree}$  

• 5 m

•  $0.73\ A\degree$  

• 0.72 m

What did Max Planck tell about light?

• Light travels in the form of small packets of energy called photons.

• Light travels in the form of small packets of energy called quanta.

• Light travels in the form of electromagnetic radiation.

• Light is made up of tiny particles called corpuscles.

Which equation is used to calculate the wavelength associated with matter?

• c = λν

• λ = c/ν

• λ = h / mv

• λ = ch / E

Tags

NGSS.HS-PS4-1

What do the different parts of the de Broglie equation (λ = h / mv) equal?

• h = Planck's constant, m = meters, v = frequency

• h = Planck's constant, m = meters, v = velocity

• h = Planck's constant, m = mass, v = frequency

• h = Planck's constant, m = mass, v = velocity

How much is 500. nm?

• 5.00 x 10^-5 m

• 5.00 x 10^-6 m

• 5.00 x 10^-7 m

• 5.00 x 10^-8 m

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

A ____ is a discrete, quantized bundle of energy

• Photoelectric effect

• Photon

• Quantized

• Proton

Tags

NGSS.HS-PS4-3