1. Tardigrade
  2. Question
  3. Chemistry
  4. The value of Planck's constant is 6.63 × 10-34 Js. The speed of light is 3 × 1017 nm s-1. Which value is closest to the wavelength in nanometer of a quantum of light with frequency of 6 × 1015 s-1 ?

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Q. The value of Planck's constant is $6.63 \times 10^{-34} Js$. The speed of light is $3 \times 10^{17} nm \, s^{-1}$. Which value is closest to the wavelength in nanometer of a quantum of light with frequency of $6 \times 10^{15} \, s^{-1}$ ?

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Solution:

$\lambda = \frac{C}{V} = \frac{3 \times 10^{17} nms^{-1}}{6 \times 10^{15} s^{-1}} = 50 nm $