Question

Which of the following is true regarding red and blue light? Select one: A. a. They travel at different speeds in a vacuum. B. b. Only red light creates an interference pattern. C. c. Only blue light creates a diffraction pattern. D. d. Photons from blue light have more energy. E. e. Both blue light and red light have the same wavelength.

Answer 1

Only D) is true, the rest are false.

Step-by-step explanation:

A) False. Light travels at 299792458m/s in a vacuum, no matter color.

B) False. Every wave can cause an interference pattern.

C) False. Every wave can cause an diffraction pattern.

D) True. E=hf, and blue light has higher frequency than red light.

E) False. Since blue light has higher frequency than red light, it has shorter wavelength.