This quiz works best with JavaScript enabled. Home > Class 12 > Class 12 Physics (Part I) Chapter 8 Electromagnetic Waves – Quiz 36 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 12 Physics (Part I) Chapter 8 Electromagnetic Waves Quiz 36 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Which of the following correctly lists electromagnetic waves in order from longest to shortest wavelength? A) Radio waves, x-rays, infrared, gamma rays. B) Microwaves, radio waves, ultraviolet rays, infrared. C) Infrared, visible light, ultraviolet, x-rays. D) Gamma rays, x-rays, ultraviolet rays, visible light. Show Answer Correct Answer: C) Infrared, visible light, ultraviolet, x-rays. 2. Frequency = 1.05x10$^{15}$ HzEnergy =? A) 6.31E-49. B) 1.58E+48. C) 3.15E+23. D) 6.96E-19. Show Answer Correct Answer: D) 6.96E-19. 3. Which of the following best describes microwaves? A) Used by medical professionals to "see" inside the body. B) Used to broadcast television signals. C) Widely used in the cooking industry. D) Used in tanning beds. Show Answer Correct Answer: C) Widely used in the cooking industry. 4. This is how we perceive the frequency (wavelength) of EM waves (light). (Vocab) A) Brightness. B) Color. C) Smell. D) Pitch. E) Volume. Show Answer Correct Answer: B) Color. 5. How do antennas utilize electromagnetic waves for communication? A) Antenna relies on physical cables to transmit data between devices. B) Antenna uses sound waves to communicate over long distances. C) Antenna converts light signals into electrical energy for communication. D) Antenna utilizes electromagnetic waves to transmit and receive information by converting electrical signals into waves and vice versa. Show Answer Correct Answer: D) Antenna utilizes electromagnetic waves to transmit and receive information by converting electrical signals into waves and vice versa. 6. Which of the following does sound travel the fastest? A) Solid. B) Liquid. C) Gas. D) Plasma. Show Answer Correct Answer: A) Solid. 7. The production of light with a specific pattern of oscillation. A) Reflection. B) Polarization. C) Refraction. D) Diffraction. Show Answer Correct Answer: B) Polarization. 8. Light waves normally travel in a A) Curved lines. B) Group of waves. C) Straight line. D) None of the above. Show Answer Correct Answer: C) Straight line. 9. Visible light waves with the longest wavelengths appear red in color A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 10. What is a common everyday application for infrared waves? A) Using a TV remote control. B) Looking for clues at a crime scene. C) Killing cancer cells. D) Killing microorganisms. Show Answer Correct Answer: A) Using a TV remote control. 11. Electromagnetic waves that help your body produce vitamin D are called? A) Ultraviolet rays. B) X-rays. C) Gamma rays. D) None of the above. Show Answer Correct Answer: A) Ultraviolet rays. 12. Which of the following are in correct order from greatest to least frequency? A) Microwaves, infrared, ultraviolet, x-rays. B) Microwaves, x-rays, infrared, ultraviolet. C) X-rays, ultraviolet, infrared, microwaves. D) Infrared, ultraviolet, x-rays, microwaves. Show Answer Correct Answer: C) X-rays, ultraviolet, infrared, microwaves. 13. What type of electromagnetic waves have the shortest wavelengths? A) X-rays. B) Radio waves. C) Gamma rays. D) Infrared rays. Show Answer Correct Answer: C) Gamma rays. 14. Which part of the electromagnetic spectrum is visible to the human eye? A) Ultraviolet. B) Infrared. C) Visible light. D) X-rays. Show Answer Correct Answer: C) Visible light. 15. Radios, laptops, and radar are examples of devices that function by using electromagnetic waves. What property of electromagnetic waves make them useful for radios, laptops, and radar signals? A) Electromagnetic waves are harmful at high frequencies. B) Electromagnetic waves must travel through a medium. C) Electromagnetic waves can travel across long distances. D) Electromagnetic waves travel at different speeds. Show Answer Correct Answer: C) Electromagnetic waves can travel across long distances. 16. Whether a wave of light is absorbed, transmitted, or reflected depends in large part of the type of ..... (plural of medium) that the light wave hits. A) Mediums. B) Waves. C) Particles. D) Frequencies. Show Answer Correct Answer: A) Mediums. 17. Waves in a lake are 6 m apart and pass a person on a raft every 2 s. What is the speed of the waves? A) 4 m/s. B) 12 m/s. C) 3 m/s. D) 8 m/s. Show Answer Correct Answer: C) 3 m/s. 18. Which electromagnetic waves are used in radar technology? A) Microwaves. B) X-rays. C) Gamma rays. D) Ultraviolet waves. Show Answer Correct Answer: A) Microwaves. 19. What is a common use for radio waves? A) To transmit light. B) To transmit sound only. C) To transmit data. D) To cook food. Show Answer Correct Answer: C) To transmit data. 20. An image that forms where light seems to come from A) Virtual image. B) Real image. C) Diffuse reflection. D) Regular reflection. Show Answer Correct Answer: A) Virtual image. 21. What is the actual time on the clock if it appears to show 4:15? A) 4:15. B) 4:45. C) 7:15. D) 7:45. Show Answer Correct Answer: C) 7:15. 22. Electromagnetic waves do not need a medium because they can transfer energy using electric and magnetic field? A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 23. An ..... is the inner, darker part of a shadow. A) Penumbra. B) Umbra. C) All the above. D) None of the above. Show Answer Correct Answer: B) Umbra. 24. What technology commonly used in navigation relies on microwaves? A) GPS. B) Sonar. C) Infrared sensors. D) Fiber optics. Show Answer Correct Answer: A) GPS. 25. Newton's prism experiments showed that white sunlight is made up of A) The full electromagnetic spectrum. B) Only blue light. C) All the colors of the visible spectrum. D) Only the longest wavelengths. Show Answer Correct Answer: C) All the colors of the visible spectrum. ← 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