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Card 6
Front
Explain why there is a minimum energy of the photon for pair production to take place and what happens when a photon has more energy than this value.
Back
Card 7
Front
Why does the existence of a threshold frequency support the particle nature of EM waves. (part 1)
Back
Card 8
Front
Why does the existence of a threshold frequency support the particle nature of EM waves. (part 2)
Back
Card 9
Front
Explain how the existence of a spectrum consisting of lines of a definite frequency supports the view that atoms have discrete energy levels. (4)
Back
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