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Photometry — Physics STD 12 Science — Question

Gujarat BoardEnglish MediumSTD 12 SciencePhysicsPhotometry2 Marks
Question
As the wavelength is increased from violet to red, the luminosity:
  1. Continuously increases.
  2. Continuously decreases.
  3. Increases then decreases.
  4. Decreases then increases.
✓

Answer

  1. Increases then decreases.

Explantion:

The luminosity first increases up to 555nm and then decreases.

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