Question

Indicate whether the following statements are true (C) or false (F). Add an explanation only for false ones.

____ 21. Visible light, radio waves, and ultraviolet waves are of the same nature.

____ 22. Electromagnetic waves can travel in a vacuum.

____ 23. The main difference between a radio wave and visible light is its frequency.

____ 24. The wavelength of the blue color is shorter than that of the yellow color.

____ 25. Different electromagnetic waves can have different frequencies, but their speed is constant.

____ 26. Light will always travel from one place to another through the shortest passage of time.

____ 27. When light reflects off a surface, its wavelength changes.

____ 28. When light is refracted as it passes from one medium / place to another, its wavelength changes.

Answer 1