Several optical glass filters are used to select specific portions of a star's light for photometry. Which of the following filters most closely matches the sensitivity of the eye, with peak wavelength sensitivity at about 550 nm? (I = infrared, B = blue, U = ultraviolet, V = visual)

Question

Quizplus · Accepted Answer

The V filter has a peak wavelength sensitivity at about 550 nm, which is consistent with the peak sensitivity of the human eye. Therefore, the V filter is the best choice for selecting specific portions of a star's light for photometry, as it closely matches the spectral sensitivity of the eye.

Several Optical Glass Filters Are Used to Select Specific Portions