Planck's Blackbody Radiation
5 Questions
| Attempts: 344
Use the graphic to the left to help solve theses problems
Questions and Answers
- 1.
What is a black body?
- A.
A theoretical object that absorbs 100% of light incident upon it and then reradiates it
- B.
The cosmic microwave background radiation
- C.
A greater intensity of light incident on a metal resulted in more electrons being emitted from the metal
- D.
A photon is emitted when the electron jumps down in energy
Correct Answer
A. A theoretical object that absorbs 100% of light incident upon it and then reradiates it -
- 2.
The amount of blue light (475 nm) in this spectra is most closely
- A.
.45 nW/m^2 μm
- B.
50 nW/m^2 μm
- C.
1.0 nW/m^2 μm
- D.
6 nW/m^2 μm
- E.
20 nW/m^2 μm
Correct Answer
D. 6 nW/m^2 μm -
- 3.
The wavelength that produces the maximum amount of light (λmax) in this spectra is most closely:
- A.
.45 μm
- B.
50 nW/m^2 μm
- C.
.7 μm
- D.
1 μm
- E.
2 μm
Correct Answer
D. 1 μm -
- 4.
Let Fλ(B) denote the amount of blue light (475 nm) and Fλ(R) denote the amount of red light (650 nm). Which of the following is correct?
- A.
Fλ(B) < Fλ(R)
- B.
Fλ(B) = Fλ(R)
- C.
Fλ(B) > Fλ(R)
Correct Answer
A. Fλ(B) < Fλ(R) -
- 5.
The ratio of the amount of blue light to the amount of red light, Fλ(B)/Fλ(R), is most closely:
- A.
.2
- B.
.6
- C.
1.5
- D.
6
- E.
10
Correct Answer
E. 10 -
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Mar 19, 2022Quiz Edited by
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Apr 26, 2013Quiz Created by
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