CAPE Physics Unit 2 · 2006 · Paper 1 · Question 8(d)
Describe what changes would be observed in the diffraction pattern on the screen if the accelerating voltage were decreased.
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Practise this questionOther parts of this question
- 8(a)Show on the screen of Figure 10 the diffraction pattern observed when electrons pass through the graphite sheet.[2 marks]
- 8(b)Calculate the speed of the electrons after being accelerated through a potential difference of 3000 V.[3 marks]
- 8(c)Calculate the de Broglie wavelength of the electrons emitted from the anode.[3 marks]
More practice: the rest of this paper · more Particulate Nature of Electromagnetic Radiation questions · all CAPE Physics Unit 2 past papers