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An electron is trapped in an infinite one-dimensional well of width = L. The ground state...

An electron is trapped in an infinite one-dimensional well of width = L. The ground state energy for this electron is 3.8 eV.

a) Calculated energy of the 1st excited state.

b) What is the wavelength of the photon emitted between 1st excited state and ground states?

c) If the width of the well is doubled to 2L and mass is halved to m/2, what is the new 3nd state energy?
d) What is the photon energy emitted from the 2nd state to 1st state under the condition part c?

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