Question

As the wavelength is increased from violet to red, the luminosity

• A. continuously increases
• B. continuously decreases
• C. increases, then decreases
• D. decreases ,then increases

Answer 1

The correct option is C increases, then decreases

With increase in wavelength of visible light, the sensitivity to eye increases, reaches a peak at 555 nm and then decreases. So luminosity increases then decreases.

Answer. C) Increases, then decreases