Electromagnetic Waves: Identifying Non-Examples
Electromagnetic waves are disturbances in electric and magnetic fields that travel through space. They do not require a medium to propagate and include types like radio waves, microwaves, infrared, visible light, UV, X-rays, and gamma rays.
We need to identify the option that does not belong to this category.
- Radio waves: These are a form of electromagnetic radiation, used extensively in broadcasting and communication.
- Microwaves: These are also electromagnetic waves, shorter in wavelength than radio waves, used in radar, cooking, and communication.
- Infra-red radiation: This is electromagnetic radiation with wavelengths longer than visible light, often perceived as heat.
- Ultrasound: These are high-frequency sound waves. Sound waves are mechanical waves, which means they require a medium (like air, water, or solid) to travel. They are produced by vibrations and are fundamentally different from electromagnetic waves.
Based on this, Ultrasound is the only option that is not an electromagnetic wave.
Similar Questions
- Which of the following are electromagnetic waves?
- Infra-red rays are
The energy of light (photon) is a form of ______.
Which of the following type of rays does NOT penetrate Earth's atmosphere?
Important Questions from Electromagnetic Waves
- Consider the following statements about electromagnetic radiation (EMR) and choose the correct statements:
A. Scattering by the atmosphere depends on the size of atmospheric particles and the wavelength of radiation
B. Rayleigh scattering is not inversely proportional to the fourth power of the wavelength
C. There are two types of scattering: elastic and inelastic scattering
D. The amount of Mie scattering is greater than Rayleigh scattering
Choose the correct answer from the options given below : - Which one of the following is NOT true for an electromagnetic wave?
- Which electromagnetic radiation(s) is/are used to cook food?
The waves used in radar systems are _______ waves.
Consider the two statements given below :
Statement-1: Infrared waves are also called heat waves.
Statement-2: Water molecules readily absorb infrared waves.
Select the correct answer using the code given below:
