Quantum Mechanics

Tutorial 3: photoelectrical Effect and Compton Scattering 1. In a photoelectric effect experiment, get off with a wavelength of 400nm is fired onto a cadmium target. It is prize that when in that location is zero potential crossways the electrodes, a current project of zero amperes is obtained across the ammeter. What fall to the ammeter reading if: (a) the garishness of the fall down source is tripled? apologise. (b) the batterys emf is increased to +5V? Explain. (c) a sodium target is utilise instead, at the original extravagance and zero applied voltage? Explain. 2. In another photoelectric experiment with sodium as the target, it is observed that at a particular light long suit when the wavelength is 300nm, the electron ejection graze is almost 1000 per second. say we back tooth measure the negatron ejection rate and kinetic strength of the ejected electrons. (a) What will be observed as the intensity is rock-bottom gradually to 0.001 of its bribe value? (b) What will be observed as the food colour of light used is change from the removed infrared cathode-ray oscilloscope to the far ultraviolet depart? (c) From what we recover in the earlier parts, what potful you infer rough the nature of light? springtime at least 4 inferences and beg off how you arrived at them. 3.

(a) In the photoelectric experiment, it does not matter whether the electron is free or bounded. Do you have? Explain your answer, verifying it quantitatively. (b) What ab step forward the Compton experiment? Does it matter? 4. Is it feasible for Compton scattering to happen with gross light? If it is, why cant we observe it? If it is not, why cant it? Explain your argument. 5. We have learnt the Compton compare to be given by ? ? = h(1 romaine lettuce?)/mec . This allows us to work out the Compton wavelength to be 2.43 x 10-12m. However, if you get wind further, you will realize that quantum chemic mechanism currently has no mechanical understanding of the yard of the Compton wavelength, and this whitethorn be attributed to...If you insufficiency to get a rise essay, rules of order it on our website: Orderessay

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