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- 1. Multiple Choice
Red light has a wavelength of 675 nm. What is its frequency?
2.03x1011 m
4.44x1014 Hz
4.44x1014 nm
2.03x1011 Hz
- 2. Multiple Choice
The frequency of violet light is 7.5x1014 Hz. What is its wavelength?
4.0x10-7 m
4.0x107 m
2.25x1023 m
2.25x1023 Hz
- 3. Multiple Choice
Which choice has the electromagnetic radiation in order of longest to shortest wavelength?
x-rays, ultra-violet rays, infrared radiation, and radiowaves.
radiowave, infrared radation, ultra-violet rays, and x-rays
radiowave, ultra-violet rays, infrared radation, and x-rays
x-rays, ultra-violet rays, infrared radation, and radiowave
- 4. Multiple Choice
Which statement is true about the ground state (original energy level) and the excited state of an electron?
The ground state is the highest energy level of an electron.
The excited state is the lowest energy level of an electron.
The ground state is the lowest energy level of an electron.
When an electron goes from the ground state to an excited state it releases light energy.
- 5. Multiple ChoiceAs the wavelength of light increasesthe frequency increases.the speed of light increases.the energy decreases.the intensity increases.
- 6. Multiple ChoiceUsing the two equations E=hv and c=λv derive an equation expressing E in terms of h, c, and λ.E=h/cλE=hc/λE=hcλE=h/cλ
- 7. Multiple ChoiceWhich theory of light- the wave or particle theory- best explains the photoelectric effectwave theoryparticle theory
- 8. Multiple ChoiceWhich theory of light- the wave or particle theory- best explains the emission of electromagnetic radiation by an excited atom.wave theoryparticle theory
- 9. Multiple ChoiceWhat is the speed of light?3.0x108 ms3.0x108 m/s6.626x10-34 Js6.626x10-34 J/s
- 10. Multiple ChoiceWhat is Planck's Constant6.626x10-34 Js6.626x10-34 J/s3.0x108 ms3.0x108 m/s
- 11. Multiple Choice
As the frequency of light increases
the energy increases.
the speed of light increases.
the energy decreases.
the intensity increases.
- 12. Multiple Choice
Which form of electromagnetic radiation has the highest frequency?
visible light
infrared waves
gamma rays
uv radiation
- 13. Multiple Choice
Which color of visible light has the least amount of energy?
orange
green
red
blue
- 14. Multiple Choice
An emission spectrum is produced when
an excited electron releases energy as it relaxes back down to its ground state
an electron in the ground state absorbs energy and becomes excited
- 15. Multiple Choice
An electron with a wavelength of 577 nm has an energy of?
2.94 x 1022 J
2.94 x 1040 J
3.44 x 10-19 J
3.44 x 10-28 J
- 16. Multiple Choice
Which statement below is TRUE?
red light travels at a greater speed than microwaves
blue light travels faster than gamma rays
green light travels faster than UV light
all light travels at the same speed
- Answer choicesTagsAnswer choicesTags