De Broglie Wave Quiz: Physics Test!
6 Questions
| Total Attempts: 1571
(110).jpg "De Broglie Wave Quiz: Physics Test!")
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Questions and Answers
- 1.Complete the following statement: According to the de Broglie relation, the wavelength of a "matter" wave is inversely proportional to
- A.
Planck's constant.
- B.
The mass of the particle.
- C.
The momentum of the particle.
- D.
The frequency of the wave.
- E.
The speed of the particle.
- 2.What is the de Broglie wavelength of an electron (m = 9.11 ´ 10-31 kg) in a 5.0 ´ 103-volt X-ray tube?
- A.
0.007 nm
- B.
0.014 nm
- C.
0.017 nm
- D.
0.028 nm
- E.
0.034 nm
- 3.Determine the de Broglie wavelength of a neutron (m = 1.67 ´ 10-27 kg) which has a speed of 5.0 m/s.
- A.
79 nm
- B.
162 nm
- C.
395 nm
- D.
529 nm
- E.
1975 nm
- 4.The de Broglie wavelength of an electron (m = 9.11 ´ 10-31 kg) is 1.2 ´ 10-10 m. Determine the kinetic energy of the electron.
- A.
1.5 x 10^-15 J
- B.
1.6 x 10^-16 J
- C.
1.7 x 10^-17 J
- D.
1.8 x 10^-18 J
- E.
1.9 x 10^-19 J
- 5.What happens to the de Broglie wavelength of an electron if its momentum is doubled?
- A.
The wavelength decreases by a factor of 4.
- B.
The wavelength increases by a factor of 4.
- C.
The wavelength increases by a factor of 3.
- D.
The wavelength increases by a factor of 2.
- E.
The wavelength decreases by a factor of 2.
- 6.The Hubble Space Telescope has an orbital speed of 7.56 ´ 103 m/s and a mass of 11,600 kg. What is the de Broglie wavelength of the telescope?
- A.
8.77 x 10^7 m
- B.
5.81 x 10^-26 m
- C.
6.63 x 10^-34 m
- D.
3.78 x 10^-40 m
- E.
7.56 x 10^-42 m
Questions: 6 | Attempts: 1553 | Last updated: Aug 28, 2020
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Sample QuestionComplete the following statement: According to the de Broglie relation, the wavelength of a "matter" wave is inversely proportional to
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