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MHT CET202618 April 2026Evening ShiftChemistryStructure of AtomActual

Which from following colours has highest energy if wave lengths of violet, blue, yellow and red light are 410 nm, 470 nm, 580 nm and 750 nm respectively ?

Options

  1. ABlue
  2. BViolet
  3. CYellow
  4. DRed

Correct answer

B. Violet

Step-by-step solution

The energy of a photon is given by the Planck-Einstein relation: E = hc where h is Planck's constant, c is the speed of light, and is the wavelength. From the relation, energy is inversely proportional to the wavelength ( E 1 ). The given wavelengths are: Violet: 410 nm Blue: 470 nm Yellow: 580 nm Red: 750 nm Since violet light has the shortest wavelength among the given colours, it has the highest energy. Answer: Violet

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