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1.A particular material has a workfunction of (15.2 + A)/10 eV. Find the maximum wavelength of...

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Physics

1.A particular material has a workfunction of (15.2 + A)/10 eV.Find the maximum wavelength of electromagnetic radiation that willresult in the emission of photoelectrons from this surface. Giveyour answer in nanometers (nm) and with 3 significant figures. A:19

2.Imagine the energy levels in an atom are given byEn = - (8.30+A)eV/n2. Find the wavelength ofthe photon emitted when an electron goes from n = (2+B) to n = 1.Give your answer in nanometers (nm) and with 3 significant figures.A:4 B:5

3. In the Bohr model for hydrogen, the energy levels are givenby En = (-13.6eV) / n2. Find the energy of aphoton emitted when an electron in a hydrogen atom jumps from n =(A+3) to n = 2.

Calculate the answer in eV and make sure to include the unit.Report your final answer with three significant figures. A: 5

4. In an atom, an electron is jumping from state with an energyof –(2.45+(A/100)) eV to a state with an energy of –(5.24+(B/100))eV. Find the wavelength of the emitted photon.

Give your answer in nm and make sure to include the unit. Reportyour final answer with three significant figures. A:54 B:11

Answer & Explanation Solved by verified expert
4.2 Ratings (905 Votes)
1 Work function of the material Also given A 19Work function of the material So the minimum frequency required for emission ie    See Answer
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