Answer:
The correct option is (c).
Explanation:
Electromagnetic waves are created as an interaction of the electric field and a magnetic field.
The characteristics of a wave are amplitude, frequency, speed and wavelength. It term defines a wave.
All the electromagnetic wave moves with a common speed i.e. the speed of light.
Hence, all electromagnetic waves move at the same speed.
Answer:
Atomic number
Explanation:
Atomic number is the number of protons, and therefore also the total positive charge, in the atomic nucleus. The Rutherford–Bohr model of the hydrogen atom (Z = 1) or a hydrogen-like ion (Z > 1).