PHYSICS
JAMB 2020 - Question 27
Physics 2020 JAMB Past Questions - Question 27: which of the following electromagnetic waves is least energetic?
Choose the correct answers from the options given.
A:
B:
C:
D:
Correct Answer
D
Explanation
The least energetic electromagnetic waves are radio waves.
The electromagnetic spectrum consists of a range of waves with varying energies. In general, the least energetic electromagnetic waves have longer wavelengths. The order of electromagnetic waves from least to most energetic is as follows:
1. Radio waves
2. Microwaves
3. Infrared radiation
4. Visible light
5. Ultraviolet radiation
6. X-rays
7. Gamma rays
Among these, radio waves have the longest wavelength and, therefore, are the least energetic. Gamma rays have the shortest wavelength and are the most energetic.