A photon of blue light
A)has a smaller wavelength than a photon of red light and travels with the same speed.
B)has a smaller wavelength than a photon of red light and travels with a greater speed.
C)has a longer wavelength than a photon of red light and travels with the same speed.
D)has a longer wavelength than a photon of red light and travels with a greater speed.

Question

Quizplus · Accepted Answer

The wavelength of blue light is shorter than that of red light, as blue light has a higher frequency. However, both colors of light travel at the same speed in a vacuum, which is the speed of light (c). Therefore, option A is the correct answer.

A Photon of Blue Light