This quiz works best with JavaScript enabled. Home > Class 12 > Class 12 Physics (Part I) Chapter 8 Electromagnetic Waves – Quiz 3 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 12 Physics (Part I) Chapter 8 Electromagnetic Waves Quiz 3 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Which of the following is an acoustic waves ..... A) Sound. B) Seismic Waves. C) Waves on strings of musical instruments. D) All are acoustic waves. Show Answer Correct Answer: D) All are acoustic waves. 2. Which of the following devices is not an OPTICAL device A) Remote control. B) Camera. C) Telescope. D) TV. Show Answer Correct Answer: A) Remote control. 3. Electromagnetic waves are classified using what measurement? A) Power. B) Frequency. C) Energy. D) Amplitude. Show Answer Correct Answer: B) Frequency. 4. Which type of electromagnetic wave can be seen with the unaided eye? A) Radio waves. B) Microwaves. C) Visible light. D) Infrared rays. Show Answer Correct Answer: C) Visible light. 5. What type of wave is a water wave? A) Mechanical wave. B) Electromagnetic wave. C) Transverse wave. D) Longitudinal wave. Show Answer Correct Answer: A) Mechanical wave. 6. The amount of waves that go by every second. A) Frequency. B) Period. C) Wavelength. D) Amplitude. Show Answer Correct Answer: A) Frequency. 7. What happens when a mechanical wave travels through a medium? A) Waves are transferred. B) Energy is transferred. C) Mass is transferred. D) Particles are transferred. Show Answer Correct Answer: B) Energy is transferred. 8. Why does a straw look broken when you put it in a cup of water? A) It is being reflected. B) It is being refracted. C) It is broken. D) The colors are being separated. Show Answer Correct Answer: B) It is being refracted. 9. Heat radiations are called A) Infrared radiations. B) Light. C) Microwaves. D) None of the above. Show Answer Correct Answer: A) Infrared radiations. 10. Electromagnetic waves sensed by the skin as heat, and used in TV remote controls are known as ..... A) Visible light. B) Infrared waves. C) X rays. D) Gamma rays. Show Answer Correct Answer: B) Infrared waves. 11. Electromagnetic wave is made up of vibrating electric and A) Magnetic fields. B) Gamma fields. C) Mrs. Fields. D) Football fields. Show Answer Correct Answer: A) Magnetic fields. 12. Which type of electromagnetic wave is used in microwave ovens to heat food? A) Infrared waves. B) Microwaves. C) Radio waves. D) Ultraviolet waves. Show Answer Correct Answer: B) Microwaves. 13. What happens to the energy of an electromagnetic wave as its frequency increases? A) It increases. B) It decreases. C) It stays the same. D) None of the above. Show Answer Correct Answer: A) It increases. 14. Which is an example of a radio wave A) Television. B) Heat lamp. C) Vision. D) Sun light. Show Answer Correct Answer: A) Television. 15. Aiden, Daniel, and Hannah are on a space mission. They need to transfer electric and magnetic energy through the vacuum of space. Which type of wave should they use? A) Radio waves. B) Microwaves. C) Visible light. D) Electromagnetic waves. Show Answer Correct Answer: D) Electromagnetic waves. 16. What is the correct speed of light in a vacuum? A) $3.00\times10^8$. B) $3.00\times10^8$. C) $3.00 \times 10^8$. D) $3.00\times10^8$. Show Answer Correct Answer: C) $3.00 \times 10^8$. 17. Which is NOT a name for a part of the electromagnetic spectrum? A) Sound waves. B) Visible light. C) Radio waves. D) X-rays. Show Answer Correct Answer: A) Sound waves. 18. A plane mirror gives you a A) Real image. B) Virtual image. C) Magnified image. D) Inverted image. Show Answer Correct Answer: B) Virtual image. 19. Which of the following is NOT a use of radio waves? A) TV broadcasting. B) Heart rate monitors. C) Cell phone communication. D) Cooking food. Show Answer Correct Answer: D) Cooking food. 20. Which electromagnetic wave is used in wireless communication technologies like Wi-Fi and cell phones? A) Gamma rays. B) Radio waves. C) X-rays. D) Infrared rays. Show Answer Correct Answer: B) Radio waves. 21. What kind of electromagnetic radiation has the longest wavelength? A) Ultraviolet rays. B) Infrared rays. C) Radio waves. D) Gamma rays. Show Answer Correct Answer: C) Radio waves. 22. Which electromagnetic wave is used in sterilizing medical equipment? A) Radio wave. B) Ultraviolet wave. C) Microwave. D) Infrared wave. Show Answer Correct Answer: B) Ultraviolet wave. 23. Frequency = 3Hz A) Wavelength = 3 m. B) Wavelength = 1/3 m. C) All the above. D) None of the above. Show Answer Correct Answer: B) Wavelength = 1/3 m. 24. Whenever electromagnetic radiation travels in space, it has: A) No vector. It is carried by its own photon energy. B) Two vectors-one electric and one magnetic, placed perpendicular to each other. C) Two vectors-one electric and one magnetic, placed parallel to each other. D) One vector-quarks, which are subatomic particles that make up photons. Show Answer Correct Answer: B) Two vectors-one electric and one magnetic, placed perpendicular to each other. 25. Which of the following is a real-world application of electromagnetic waves? A) Photosynthesis in plants. B) Transmission of radio signals. C) Boiling water. D) Rusting of iron. Show Answer Correct Answer: B) Transmission of radio signals. ← 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 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 10Class 12 Physics (Part I) Chapter 8 Electromagnetic Waves Quiz 11 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books