Question

Visible light has a wavelength range of _____________ nanometers. Chlorophyll A absorbs light at a wavelength of _____________ nanometers, and chlorophyll B absorbs light at a wavelength of _____________ nanometers, whereas they reflect light.

a) 400-700, 430, 660
b) 300-800, 480, 580
c) 450-750, 500, 640
d) 600-900, 700, 800

Answer 1

Visible light ranges from approximately 400 to 700 nanometers. Chlorophyll A absorbs at 430 nm and chlorophyll B at 660 nm. The frequency range for visible light is about 4.3 × 10¹´ Hz to 7.5 × 10¹´ Hz.

Step-by-step explanation:

Visible light has a wavelength range of about 400 to 700 nanometers. Chlorophyll A absorbs light at a wavelength of approximately 430 nanometers, and chlorophyll B absorbs light at a wavelength of approximately 660 nanometers, while they reflect light in green, which is why plants appear green. Considering this information:

The absorption spectrum of chlorophylls, as detailed in a provided figure, shows that chlorophyll b indeed has peaks at about 450 nm and chlorophyll a at 675 nm. As such, the correct options are (a) for the first blank and (b) for the second and third blanks in the provided question.