This quiz works best with JavaScript enabled. Home > Class 12 > Class 12 Physics (Part I) Chapter 8 Electromagnetic Waves – Quiz 27 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 12 Physics (Part I) Chapter 8 Electromagnetic Waves Quiz 27 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. What phenomenon explains the bending of light as it passes from air into water? A) Reflection. B) Refraction. C) Diffraction. D) Dispersion. Show Answer Correct Answer: B) Refraction. 2. Infrared waves have longer wavelengths than visible light. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 3. Strongest ionizing radiation is X-ray. A) TRUE. B) FALSE. C) MAYBE. D) None of the above. Show Answer Correct Answer: B) FALSE. 4. FM signals travel as changes in ..... A) The speed of the wave. B) The frequency of the wave. C) The amplitude of the wave. D) The loudness of the wave. Show Answer Correct Answer: B) The frequency of the wave. 5. Arrange the electromagnetic waves in order of increasing frequency A) Ultraviolet rays, infrared rays, microwaves, gamma rays. B) Microwaves, infrared rays, ultraviolet rays, gamma rays. C) Infrared rays, microwaves, ultraviolet rays, gamma rays. D) Microwaves, gamma rays, infrared rays, ultraviolet rays. Show Answer Correct Answer: B) Microwaves, infrared rays, ultraviolet rays, gamma rays. 6. Which is NOT TRUE about electromagnetic waves? A) The higher the frequency, the more energy it has. B) The longer the wavelength, the less energy it has. C) The shorter its wavelength, the less energy it has. D) The shorter its wavelength, the higher its frequency. Show Answer Correct Answer: C) The shorter its wavelength, the less energy it has. 7. Waves that can travel through space where there is no matter are called: A) Tidal waves. B) Electromagnetic waves. C) Sound waves. D) None of the above. Show Answer Correct Answer: B) Electromagnetic waves. 8. EM waves A) Must travel through a vacuum. B) Can travel through a medium or a vacuum. C) Are the same type of wave as mechanical waves. D) Can only travel through a vacuum. Show Answer Correct Answer: B) Can travel through a medium or a vacuum. 9. Because electromagnetic waves travel as both a particle and a wave, this is the "particle" component of an electromagnetic wave. (Vocab) A) Proton. B) Muon. C) Photon. D) Higgs Boson. E) Transceiver. Show Answer Correct Answer: C) Photon. 10. Which color of light has the longest wavelength? A) Orange. B) Red. C) Blue. D) Green. Show Answer Correct Answer: B) Red. 11. Electromagnetic wave with a wavelength between about 400 billionths and 10 billions of a meter A) Ultraviolet wave. B) Visible light. C) X-ray. D) Infrared wave. Show Answer Correct Answer: A) Ultraviolet wave. 12. What best describes the type of waves emitted by the Sun's rays? A) The Sun's rays are mechanical waves because they carry the greatest amount of energy. B) The Sun's rays are sound waves because they can travel through the vacuum of space. C) The Sun's rays are electromagnetic waves because they can travel through the vacuum of space. D) The Sun's rays are transverse waves because they cause the particles of space to compress together and transfer motion. Show Answer Correct Answer: C) The Sun's rays are electromagnetic waves because they can travel through the vacuum of space. 13. A source of electromagnetic radiation produces infrared light. which of the following could be the wavelength of this light A) 3.0nm. B) 4.7cm. C) 66.8m. D) 34.5um. E) 16.5A. Show Answer Correct Answer: A) 3.0nm. 14. Electromagnetic waves do not require a ..... to travel through. A) Solid. B) Gas. C) Vacuum. D) Medium. Show Answer Correct Answer: D) Medium. 15. Among seven types of electromagnet, which one has greatest wavelength. A) Ultraviolet ray. B) Microwave. C) Radiowave. D) X-ray. Show Answer Correct Answer: C) Radiowave. 16. Sound travels in which kind of wave? A) Longitudinal waves. B) Transverse waves. C) All the above. D) None of the above. Show Answer Correct Answer: A) Longitudinal waves. 17. The number of waves passing a point in a certain amount of time is the ..... A) Frequency. B) Amplitude. C) Wavelength. D) Compression. Show Answer Correct Answer: A) Frequency. 18. Which of the following is correctly arranged from lowest to highest energy? A) Microwave, visible light, radio wave. B) Ultraviolet, radio wave, infrared. C) Visible light, ultraviolet, gamma ray. D) X-ray, gamma ray, ultraviolet. Show Answer Correct Answer: C) Visible light, ultraviolet, gamma ray. 19. The highest point of a wave is called what? A) Trough. B) Wavelength. C) Peak. D) Amplitude. Show Answer Correct Answer: C) Peak. 20. ..... are used to destroy cancer cells through radiation treatment. A) Radiation therapy. B) Chemotherapy. C) Antibiotics. D) Immunotherapy. Show Answer Correct Answer: A) Radiation therapy. 21. Light from the Sun transfers solar energy to the Earth system. Sunlight travels to Earth as ..... waves. A) Electromagnetic. B) Seismic. C) Sound. D) Water. Show Answer Correct Answer: A) Electromagnetic. 22. What can electromagnetic waves travel through that mechanical waves can not travel through? A) Brick. B) Wood. C) Vacuum. D) All of the above. Show Answer Correct Answer: C) Vacuum. 23. What is the primary difference between X-rays and visible light? A) Wavelength. B) Speed. C) Amplitude. D) Polarization. Show Answer Correct Answer: A) Wavelength. 24. All EM waves travel at A) Different speeds. B) The speed of sound. C) The speed of light. D) The speed of a vacuum. Show Answer Correct Answer: C) The speed of light. 25. Gamma rays have the shortest wavelength, and therefore the ..... frequency. A) Lowest. B) Highest. C) All the above. D) None of the above. Show Answer Correct Answer: B) Highest. ← 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