Atomic physics questions | form six Physics

A muon is a particle which has the same charge as ana electron but its mass is 207 times the mass of an electron. An unusual atom similar to hydrogen has been created consisting of a muon orbiting a single proton. An energy level diagram for this atom is shown in Figure 1.

1. Determine the ionization energy of this atom in joules.
2. Calculate the maximum possible wavelength of a proton which absorbed will be able to ionize this atom.
3. Calculate the de Broglie wave length of muon travelling at 11% of the speed of light.

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UNSOLVED

Why are the energy levels labelled with negative energies?

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UNSOLVED

Ultraviolet light of wavelength 3600x10^-10m is made to fall on a smooth surface of potassium. Determine:

1. The maximum energy of emitted photoelectrons.
2. The stopping potential.
3. The velocity of the most energetic photoelectrons given that work function for potassium is 2eV.

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UNSOLVED

Define activity and half-life.

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UNSOLVED

Give any four uses of LASER light.

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UNSOLVED