Frequency, Wavelength, and Bohr Models

Red light has a wavelength of 675 nm.  What is its frequency?

• 2.03x1011 m
• 4.44x1014 Hz
• 4.44x1014 nm
• 2.03x1011 Hz

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NGSS.HS-PS4-1

The frequency of violet light is 7.5x1014 Hz.  What is its wavelength? 

• 4.0x10-7 m
• 4.0x107 m
• 2.25x1023m
• 2.25x1023 Hz

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NGSS.HS-PS4-1

Which choice has the electromagnetic radiation in order by descreasing 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

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NGSS.HS-PS4-1

Which statement is true about the ground state 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.

As the wavelength of light increases

• the frequency increases.
• the speed of light increases.
• the energy decreases.
• the intensity increases.

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NGSS.HS-PS4-1

In the third energy level,

• there are two energy sublevels.
• the f sublevel has 7 orbitals.
• there are three s orbitals.
• a maximum of 18 electrons are allowed.

Using the two equations E=hv and c=λv derive an equation expressing E in terms of h, c, and λ.

• E=h/cλ
• E=hc/λ
• E=hcλ
• E=h/cλ

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NGSS.HS-PS4-1

NGSS.HS-PS4-3

Which theory of light- the wave or particle theory- best explains the interference of light?

• wave theory
• particle theory

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NGSS.HS-PS4-3

Which theory of light- the wave or particle theory- best explains the photoelectric effect

• wave theory
• particle theory

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NGSS.HS-PS4-3

Which theory of light- the wave or particle theory- best explains the emission of electromagnetic radiation by an excited atom.

• wave theory
• particle theory

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NGSS.HS-PS4-3