Find the ratio of energy for radiations having $6000 \ \mathring{A}$ and $4000 \ \mathring{A}$ wavelength.
$(h = 6.62 \times 10^{-34} \ J \ s, c = 3 \times 10^8 \ m \ s^{-1})$

  • A
    $2:3$
  • B
    $3:2$
  • C
    $4:9$
  • D
    $9:4$

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