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Gaokao Physics Practice Question

某小型医用回旋加速器,最大回旋半径约为 $0.5\ \mathrm{m}$ ,磁感应强度大小为 $1.12\ \mathrm{T}$ ,质子加速后获得的最大动能为 $1.5 \times 10^7\ \mathrm{eV}$ 。根据给出的数据,可计算质子经该回旋加速器加速后的最大速率约为(忽略相对论效应,$1\ \mathrm{eV} = 1.6 \times 10^{-19}\ \mathrm{J}$) ( )

  1. A.$3.6 \times 10^6\ \mathrm{m/s}$
  2. B.$1.2 \times 10^7\ \mathrm{m/s}$
  3. C.$5.4 \times 10^7\ \mathrm{m/s}$
  4. D.$2.4 \times 10^8\ \mathrm{m/s}$

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