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 ______.
Important Questions from Electromagnetic 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:
Consider the following statements about visible light, UV light and X-rays:
1. The wavelength of visible light is more than that of X-rays.
2. The energy of X-ray photons is higher than that of UV light photons.
3. The energy of UV light photons is less than that of visible light photons.
Which of the statements given above is/are correct?The wavelength of X-rays is of the order of
Which of the followings are the characteristics of electromagnetic waves?
1) They are elastic waves.
2) They can also move in a vacuum.
3) They have electric and magnetic components that are mutually perpendicular.
4) They move with a speed equal to 3 lakh meters per second.
Select the correct answer using the code given below:
Which of the following devices is based on the phenomenon of electromagnetic induction?
