Answer :
Explanation :
The electromagnetic spectrum shows the wavelength or frequency range of any wave.
It consists of the following waves :
- Gamma rays (short wavelength or high frequency)
- X-rays
- Ultraviolet rays
- Visible light
- Infrared rays
- Microwaves
- Radio waves (long wavelength or short frequency)
So, the purple light is not the part of the electromagnetic spectrum.
Hence, the correct option is (c).
Electricity is NOT a part of electromagnetic spectrum.
An electromagnetic spectrum contains electromagnetic radiations arranged according to frequencies and wavelength.
Further Explanation
Electromagnetic waves
- Electromagnetic waves are types of waves that do not require a material medium for transmission.
- These waves are mostly transverse in nature, which means the direction of transmission is perpendicular to the direction of vibration of particles.
- They include, light waves, radio waves, x-rays, infra-red, etc.
Electromagnetic spectrum
- An electromagnetic wave shows electromagnetic waves arranged according to frequencies and wavelength.
- Electromagnetic spectrum contains electromagnetic waves: Gamma rays, x-rays, Ultraviolet, Visible light, infra-red, microwaves, and radio waves.
- The electromagnetic spectrum is divided into various sections based on wavelength, with gamma rays having the shortest wavelength and radio waves having the longest wavelength.
- The part of the electromagnetic spectrum that we can see using our naked eyes is called the visible light spectrum.
- In order of frequency, the radio waves have the lowest frequency while gamma rays have the largest frequency.
General characteristics of electromagnetic waves
- They travel with the speed of light (3.0 x 10^8 m/s)
- They possess energy that is given by; E =hf, where h is the plank’s constant and f is the frequency.
- They are transverse in nature, and therefore, the wavelength is measured between successful crests or troughs.
- They can travel through vacuum
Keywords: Electromagnetic spectrum, electromagnetic waves.
Learn more about:
- Electromagnetic spectrum: https://brainly.com/question/11725209
- Electromagnetic waves: https://brainly.com/question/12450147
- Characteristics of electromagnetic waves: https://brainly.com/question/12450147
Level: High school
Subject: Physics
Topic: Electromagnetic spectrum