This quiz works best with JavaScript enabled. Home > Class 12 > Class 12 Physics (Part I) Chapter 8 Electromagnetic Waves – Quiz 28 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 12 Physics (Part I) Chapter 8 Electromagnetic Waves Quiz 28 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. When the amplitude of a sound wave increases what is happening to the sound? A) It is getting louder. B) It is getting softer. C) It is getting farther away. D) None of the above. Show Answer Correct Answer: A) It is getting louder. 2. Frequency is measured in what units? A) Hearts. B) Degrees. C) Hertz. D) Amps. Show Answer Correct Answer: C) Hertz. 3. Ultraviolet light A) Is always bad for us. B) Is used by our skin to produce vitamin D. C) Is used by solar panels. D) Is used in nuclear power plants. Show Answer Correct Answer: B) Is used by our skin to produce vitamin D. 4. What is the main difference between mechanical and electromagnetic waves? A) Mechanical waves can travel through a vacuum; electromagnetic waves cannot. B) Mechanical waves require a medium; electromagnetic waves do not. C) Mechanical waves are faster than electromagnetic waves. D) Mechanical waves are a type of electromagnetic wave. Show Answer Correct Answer: B) Mechanical waves require a medium; electromagnetic waves do not. 5. When an electric charge vibrates, the electric field around it changes creating a changing ..... A) Magnetic field. B) Radio active field. C) Electron field. D) Sound field. Show Answer Correct Answer: A) Magnetic field. 6. When water droplets in the atmosphere act like prisms, the colors in sunlight undergo A) Diffraction. B) Refraction. C) Dispersion. D) Interference. Show Answer Correct Answer: C) Dispersion. 7. Cellular tellophones utilize A) Radio waves. B) Microwaves. C) X rays. D) Cancer causing rays. Show Answer Correct Answer: B) Microwaves. 8. Visible light is located between ..... A) Infrared and ultraviolet. B) X-ray and gamma. C) Microwave and infrared. D) Ultraviolet and x-ray. Show Answer Correct Answer: A) Infrared and ultraviolet. 9. Which is true about x-rays? A) They have a short wavelength and a high frequency. B) X-rays with shorter wavelengths can penetrate through metals. C) X-rays with longer wavelengths can penetrate through flesh but not bones. D) All of the above. Show Answer Correct Answer: D) All of the above. 10. Light waves bouncing off a surface is known as? A) Transmission. B) Refraction. C) Reflection. D) Absorption. Show Answer Correct Answer: C) Reflection. 11. Which electromagnetic wave is commonly used for sterilizing medical equipment? A) Radio waves. B) Microwaves. C) Ultraviolet waves. D) Infrared waves. Show Answer Correct Answer: C) Ultraviolet waves. 12. High frequency waves are associated with A) Cellular damage. B) Increased energy. C) Surgical procedures. D) All of these. Show Answer Correct Answer: D) All of these. 13. Which of the following correctly list the electromagnetic waves in order from the longest to the shortest wavelength? A) Gamma Ray, UV, IR, microwave. B) Microwave, UV, Visible light, gamma ray. C) Radio wave, IR, Gamma ray, UV. D) Radio wave, IR, Visible light, X-ray. Show Answer Correct Answer: D) Radio wave, IR, Visible light, X-ray. 14. The distance between 2 crests or troughs A) Wavelength. B) Amplitude. C) Frequency. D) Wave speed. Show Answer Correct Answer: A) Wavelength. 15. Material some waves travel through, such as the type of solid, liquid, or gas. A) Trough. B) Peak. C) Wavelength. D) Medium. Show Answer Correct Answer: D) Medium. 16. How does the speed of electromagnetic waves vary in different media? A) Electromagnetic waves travel faster in water than in air. B) The speed of electromagnetic waves is constant in all media. C) The speed of electromagnetic waves increases in denser media. D) The speed of electromagnetic waves decreases in denser media compared to a vacuum. Show Answer Correct Answer: D) The speed of electromagnetic waves decreases in denser media compared to a vacuum. 17. Which electromagnetic wave is primarily used in night vision technology? A) Ultraviolet rays. B) Infrared rays. C) X-rays. D) Gamma rays. Show Answer Correct Answer: B) Infrared rays. 18. Which waves are often used for communication? A) Ultraviolet rays. B) Infrared ray. C) Radio waves. D) Gamma rays. Show Answer Correct Answer: C) Radio waves. 19. Water waves and light waves are both examples to ..... A) Longitudinal Wave. B) Transverse Wave. C) Frequency wave. D) Sound Wave. Show Answer Correct Answer: B) Transverse Wave. 20. Light waves carry energy over a distance. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 21. ..... radiation play an important role in satellite communication. A) Ultraviolet. B) Visible light. C) Infrared. D) Microwave. Show Answer Correct Answer: D) Microwave. 22. The electromagnetic spectrum is the entire range of A) Colorsof visible light. B) Ultravioletlight. C) Gammarays and X rays. D) EMwaves. Show Answer Correct Answer: D) EMwaves. 23. This type of wave is absorbed by bones and teeth, but passes through soft tissue, producing an image on a sheet of film. A) X-ray. B) Ultraviolet. C) Radio wave. D) Infrared ray. Show Answer Correct Answer: A) X-ray. 24. The waves with the longest wavelengths in the electromagnetic spectrum are A) Infrared. B) Uv. C) Gamma rays. D) Radio waves. Show Answer Correct Answer: D) Radio waves. 25. Wavelengths on the left side of the Electromagnetic spectrum are ..... A) Long. B) Short. C) Average. D) None of the above. Show Answer Correct Answer: A) Long. ← PreviousNext →Related QuizzesClass 12 Physics (Part I) Chapter 8 Electromagnetic Waves Quiz 1Class 12 Physics (Part I) Chapter 8 Electromagnetic Waves Quiz 2Class 12 Physics (Part I) Chapter 8 Electromagnetic Waves Quiz 3Class 12 Physics (Part I) Chapter 8 Electromagnetic Waves Quiz 4Class 12 Physics (Part I) Chapter 8 Electromagnetic Waves Quiz 5Class 12 Physics (Part I) Chapter 8 Electromagnetic Waves Quiz 6Class 12 Physics (Part I) Chapter 8 Electromagnetic Waves Quiz 7Class 12 Physics (Part I) Chapter 8 Electromagnetic Waves Quiz 8Class 12 Physics (Part I) Chapter 8 Electromagnetic Waves Quiz 9Class 12 Physics (Part I) Chapter 8 Electromagnetic Waves Quiz 10 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books