Physics (AS & A Level) · Feb / March 2022 · Paper 42 · Question 10
9702
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In an X-ray tube, electrons are accelerated through a potential difference of 75 kV. The electrons then strike a tungsten target of effective mass 15 g. The electron energy is converted into the energy of X-ray photons with an efficiency of 5.0%. The rest of the energy is converted into thermal energy.
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10(a)[3]
10(b)[2]
10(c)[2]
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