
Photon Momentum and Effective Mass
Interactive Video
•
Physics, Science
•
9th - 12th Grade
•
Hard

Liam Anderson
FREE Resource
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10 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the formula for calculating the momentum of a photon?
Momentum = Wavelength divided by Planck's constant
Momentum = Energy divided by speed of light
Momentum = Planck's constant divided by wavelength
Momentum = Planck's constant times frequency
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Why is the rest mass of a photon considered to be zero?
Photons have a very high speed
Photons have effective mass but no rest mass
Photons have a constant energy
Photons are not affected by gravity
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How does the momentum of a photon change if its wavelength is halved?
The momentum doubles
The momentum becomes zero
The momentum is halved
The momentum remains the same
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the momentum of a photon with a wavelength of 700 nanometers?
1.893 x 10^-27 kg·m/s
9.466 x 10^-28 kg·m/s
4.91 x 10^-36 kg·m/s
6.626 x 10^-34 kg·m/s
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What happens to the momentum of a photon if its wavelength decreases?
The momentum decreases
The momentum increases
The momentum remains constant
The momentum becomes zero
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the effective mass of a photon with a wavelength of 450 nanometers?
9.466 x 10^-28 kg
1.893 x 10^-27 kg
6.626 x 10^-34 kg
4.91 x 10^-36 kg
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How is the effective mass of a photon calculated?
Effective mass = Wavelength divided by Planck's constant
Effective mass = Planck's constant divided by wavelength times speed of light
Effective mass = Planck's constant divided by wavelength
Effective mass = Planck's constant times speed of light
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