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Define the distance of closest approach. An a-particle of kinetic energy 'K' is bombarded on a thin gold foil. The distance of the closest approach is 'Y. What will be the distance of closest approach for an a-particle of double the kinetic energy? |
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Answer» Solution :For distance of closest appraoch, see Very Short ANSWER Question Number 2. Distance of closest APPROACH is GIVEN by the formula. `r_(0) =(1)/(4 pi in_(0)) .(2Ze^(2))/(K)`, where K = initial value of the kinetic energy of alpha-particle. Thus, `r_(0) prop (1)/(k)`. Hence, if kinetic energy of a-particle is doubled to 2K, the distance of the closest approach is reduced to `r_(0)//2`. |
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