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Structure of Atom question

2013 · Q104
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Structure of Atom question

2013 · Q104

NEETChemistryStructure of AtomMCQ+4 / −1
The value of Planck's constant is 6.63 ×\times× 10−-−34 J s. The speed of light is 3 ×\times× 1017 mm s−-−1. Which value is closest to the wavelength in nanometer of a quantum of light with frequency of 6 ×\times× 1015 s−-−1 ?
  1. A
    50
  2. B
    75
  3. C
    10
  4. D
    25
View written solutionFree

Correct answer: A

c = νλ\nu \lambda νλ

λ\lambda λ = cν{c \over \nu }νc​

= 3×10176×1015{{3 \times {{10}^{17}}} \over {6 \times {{10}^{15}}}}6×10153×1017​ = 50 nm

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