Question

ch9. q1
how does the speed of visible light compare with the speed of gamma rays, when both speeds are measured in a vacuum?
the speed of visible light is greater.
the speed of gamma rays is greater.
the speeds are the same.
no answer can be determined from the information given

Explanation:

Visible light and gamma rays are both electromagnetic waves. In a vacuum, all electromagnetic waves travel at the same speed, which is the speed of light ($c = 3\times10^{8}\ m/s$). The difference between visible light and gamma rays lies in their frequencies and wavelengths, not their speeds in a vacuum.

Answer:

The speeds are the same.