This quiz works best with JavaScript enabled. Home > Class 12 > Class 12 Physics (Part I) Chapter 8 Electromagnetic Waves – Quiz 7 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 12 Physics (Part I) Chapter 8 Electromagnetic Waves Quiz 7 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. As photons travel farther from the source, the ..... of light decreases. A) Intensity. B) Wavelength. C) Frequency. D) Speed. Show Answer Correct Answer: A) Intensity. 2. A student asks a series of questions about a wave. The answer to which question will allow the student to determine whether the wave is electromagnetic or mechanical? A) Does it require a medium in order to travel?. B) Can it pass through air and water?. C) Does it have a measurable speed?. D) Does it have a measurable frequency?. Show Answer Correct Answer: A) Does it require a medium in order to travel?. 3. What are the two kind of fields that make up an electromagnetic wave? A) Electric and sound fields. B) Electric and magnetic fields. C) Magnetic and longitudinal fields. D) Magnetic and sound fields. Show Answer Correct Answer: B) Electric and magnetic fields. 4. What do you call the sound quality that gives a unique tone to a human voice or the sound of an instrument? A) Volume. B) Musical sounds. C) Timbre. D) Range. Show Answer Correct Answer: C) Timbre. 5. Can you help identify the wave that has wavelengths shorter than ultraviolet rays but longer than gamma rays? A) X-rays. B) Infrared rays. C) Gamma rays. D) Stingrays. Show Answer Correct Answer: A) X-rays. 6. Most of the electromagnetic spectrum is A) Visible to humans. B) Invisible to humans. C) Used in machinery. D) All of these. Show Answer Correct Answer: B) Invisible to humans. 7. An example of a wave with a short wavelength, high frequency, and high energy is a A) X-ray. B) Microwave. C) Visible light wave. D) Infrared wave. Show Answer Correct Answer: A) X-ray. 8. Which of the following electromagnetic waves is given off as heat? A) Radio Waves. B) Infrared Rays. C) Visible Light. D) Gamma Rays. Show Answer Correct Answer: B) Infrared Rays. 9. Rays used to take pictures of bones of human body A) X-ray. B) Light. C) Photo. D) None of the above. Show Answer Correct Answer: A) X-ray. 10. What can X-rays penetrate to take pictures in medicine? A) Only bones. B) Only skin. C) Soft tissue like skin and muscle. D) Only muscle. Show Answer Correct Answer: C) Soft tissue like skin and muscle. 11. The invisible spectrum contains all the colors of the rainbow. A) TRUE. B) FALSE. C) All the above. D) None of the above. Show Answer Correct Answer: A) TRUE. 12. Which type of electromagnetic wave is primarily used in night vision technology? A) Radio waves. B) Infrared waves. C) Microwaves. D) Ultraviolet waves. Show Answer Correct Answer: B) Infrared waves. 13. What is the description for gamma rays? A) Causes skin to tan. B) Kills cancer cells. C) Used for night vision. D) Used in cell phones. Show Answer Correct Answer: B) Kills cancer cells. 14. All electromagnetic waves have the same ..... in free space. A) Frequency. B) Amplitude. C) Wavelength. D) Speed. Show Answer Correct Answer: D) Speed. 15. What are electromagnetic waves? A) Sound waves. B) Electric & magnetic fields (energy) that travel through empty space very quickly. C) Someone's name. D) Things like longitudinal waves. Show Answer Correct Answer: B) Electric & magnetic fields (energy) that travel through empty space very quickly. 16. What is the term for a wave that requires a medium to travel? A) Mechanical wave. B) Electromagnetic wave. C) Transverse wave. D) Longitudinal wave. Show Answer Correct Answer: A) Mechanical wave. 17. Which phrase best describes the path of a light wave? A) Spiraling around the source. B) Straight away from the source. C) Parallel to the source. D) Perpendicular to the source. Show Answer Correct Answer: B) Straight away from the source. 18. All of these types of waves travel from the Sun to Earth except ..... A) Light waves. B) Sound waves. C) Infrared waves. D) Ultraviolet waves. Show Answer Correct Answer: B) Sound waves. 19. Which type of wave has a wave perpedicular to the disturbance? A) Surface. B) Mechanical. C) Transverse. D) Longitudinal. Show Answer Correct Answer: C) Transverse. 20. What waves have the lowest energy? A) Gamma rays. B) Visible light waves. C) Radio waves. D) X rays. Show Answer Correct Answer: C) Radio waves. 21. Human can sense ionizing radiations. A) TRUE. B) FALSE. C) MAYBE. D) None of the above. Show Answer Correct Answer: B) FALSE. 22. Electromagnetic waves are longitudinal waves. A) TRUE. B) FALSE. C) All the above. D) None of the above. Show Answer Correct Answer: B) FALSE. 23. Which electromagnetic waves are used in medical imaging to view the inside of the human body? A) X-rays. B) Gamma rays. C) Ultraviolet rays. D) Radio waves. Show Answer Correct Answer: A) X-rays. 24. Which of these allows electromagnetic radiations of higher wavelength to pass through itself? A) Glass. B) Rock Salt. C) All the above. D) None of the above. Show Answer Correct Answer: B) Rock Salt. 25. The color that has the shortest wavelength in the visible spectrum A) Red. B) Blue. C) White. D) Violet. Show Answer Correct Answer: D) Violet. ← 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 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