Wavelength, Frequency & Energy of Electromagnetic Radiation
Wavelength, Frequency & Energy of Electromagnetic Radiation
|[pic] |Equations & constants |
| |C = 2.998 x 108 m/s |
| |H = 6.626 x 10-34 Js |
| |Vλ = C |
| |E = hv |
These homework problems will help you test your own knowledge of the material above. They get increasingly harder. Show all work!
Level 1
|A wave oscillates with a frequency of 9.05 x 1015 Hz. What is the energy (in J) associated with this wave? |____________J |
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|It requires a photon with a minimum energy of 4.41 x 10-19J to emit electrons from sodium metal. What is the minimum frequency |____________Hz |
|of light necessary to emit electrons (In Hz)? | |
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Level 2
|One type of sunburn occurs on exposure to UV light of wavelength 325nm. What is the energy of a photon of this wavelength? |____________J |
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|What wavelength (in nm)of radiation has photons of energy 2.87 x 10-18J? In what portion of the electromagnetic spectrum would |____________nm |
|this radiation be found? | |
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Level 3
|Calculate the energy of a photon from an FM radio station at a frequency of 101.1 MHz |____________J |
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|Sun tan lotion does the job of protecting us from UV-B waves that have a wavelength of approximately 280nm. What is the |____________J |
|frequency and energy associated with those waves? | |
| |____________Hz |
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Muhahahaha
|The energy from radiation can be used to cause the rupture of chemical bonds. A minimum energy of 1.56 x 10-18 J/photon is |____________ |
|required to break the nitrogen-nitrogen bond in N2. What is the longest wavelength of radiation that possesses the necessary | |
|energy to break the bond? Why type of electromagnetic radiation is this? | |
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