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The value of plancksconstantis6.63×10–34 JsThe velocity of light is3.0×108ms–1.Which value iclosest to the wavelength imetres of a quantum of light with frequency of 8×1015s1.

  1. 3×107    
  2. 2×10–25    
  3. 5×10–18    
  4. 3.75×108    

The correct answer is: 3.75×108

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