Calculate the energy of a photon having wavelength $\lambda = 1000 \, \mathring{A}$ in Joules.

  • A
    $4.96 \times 10^{-19} \, \text{J}$
  • B
    $9.92 \times 10^{-19} \, \text{J}$
  • C
    $19.84 \times 10^{-19} \, \text{J}$
  • D
    $12.4 \, \text{J}$

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