NEET Exam > NEET Videos > Physics Class 11 > Short Tricks: Electromagnetic Spectrum
Short Tricks: Electromagnetic Spectrum Video Lecture | Physics Class 11 - NEET
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FAQs on Short Tricks: Electromagnetic Spectrum Video Lecture - Physics Class 11 - NEET
| 1. What is the electromagnetic spectrum? |  |
Ans. The electromagnetic spectrum refers to the range of all possible frequencies of electromagnetic radiation, from radio waves with the lowest frequency to gamma rays with the highest frequency. It includes various types of waves, such as radio waves, microwaves, infrared, visible light, ultraviolet, X-rays, and gamma rays.
| 2. How is the electromagnetic spectrum classified? | |
Ans. The electromagnetic spectrum is classified into different regions based on the wavelength or frequency of the waves. The commonly recognized regions are radio waves, microwaves, infrared, visible light, ultraviolet, X-rays, and gamma rays. Each region has unique properties and applications.
| 3. What are some practical applications of the electromagnetic spectrum? | |
Ans. The electromagnetic spectrum has numerous practical applications in various fields. Radio waves are used for communication, such as broadcasting and mobile phones. Microwaves are utilized in radar systems, cooking, and wireless communication. Infrared is used for night vision, remote controls, and thermal imaging. Visible light enables us to see, and it is used in photography, displays, and optical communication. Ultraviolet is used in sterilization, fluorescence, and tanning beds. X-rays are used in medical imaging, while gamma rays are used in cancer treatment and detection.
| 4. How does the frequency of electromagnetic waves affect their behavior? | |
Ans. The frequency of electromagnetic waves determines their behavior. Higher frequency waves, such as X-rays and gamma rays, have more energy and can penetrate matter more deeply. Lower frequency waves, like radio waves, have less energy and can pass through obstacles easily. The frequency also determines the type of interaction with matter, such as absorption, reflection, or transmission.
| 5. Can the human body be harmed by exposure to electromagnetic radiation? | |
Ans. The human body can be harmed by excessive exposure to certain types of electromagnetic radiation. For example, prolonged exposure to ultraviolet radiation from the sun can cause skin damage and increase the risk of skin cancer. Similarly, excessive exposure to X-rays and gamma rays can be harmful and increase the risk of radiation sickness and DNA damage. However, most everyday exposure to electromagnetic waves, such as radio waves and visible light, is considered safe.
About this Video
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Nov 21, 2024 Last updated |
Video Description: Short Tricks: Electromagnetic Spectrum for NEET 2024 is part of Physics Class 11 preparation.
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