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Dual Nature of Radiation and Matter — Physics STD 12 Science — Question

Gujarat BoardEnglish MediumSTD 12 SciencePhysicsDual Nature of Radiation and Matter1 Mark
MCQ
A photon will have less energy, if its:
  • A
    Wavelength is longer
  • B
    Wavelength is shorter
  • C
    Amplitude is less
  • D
    Data insufficient
✓

Answer

  1. Wavelength is longer

Explanation:

$\text{E}=\frac{\text{hc}}{\lambda}$

$\text{E}\propto\frac{\text{1}}{\lambda}$

Hence, E is less if $\lambda$ is longer.

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