If the energy of a photon with a frequency of $2 \times 10^{12} \ Hz$ is $E$,then the energy of a photon with a frequency of $4 \times 10^{12} \ Hz$ will be ....

  • A
    $2E$
  • B
    $E/2$
  • C
    $E/4$
  • D
    $E$

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