This quiz works best with JavaScript enabled. Home > Class 12 > Class 12 Physics (Part I) Chapter 8 Electromagnetic Waves – Quiz 4 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 12 Physics (Part I) Chapter 8 Electromagnetic Waves Quiz 4 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Which electromagnetic waves allow us to diagnose & treat cancer? A) Gamma rays. B) X-rays. C) Ultraviolet rays. D) Infrared. Show Answer Correct Answer: A) Gamma rays. 2. The full range of electromagnetic waves is called the ..... A) Electromagnetic spectrum. B) Electromagnetic field. C) Electromagnetic range. D) Electromagnetic band. Show Answer Correct Answer: A) Electromagnetic spectrum. 3. Which wavelengths of the EM spectrum are dangerous to life? A) Radio, micro and gamma. B) Gamma, infrared, and UV. C) Infrared, UV and X Rays. D) UV, X rays and Gamma. Show Answer Correct Answer: D) UV, X rays and Gamma. 4. What is the energy called that electromagnetic waves transfer through matter and/or space? A) Polarized light. B) Electromagnetic radiation. C) Lightening. D) None of the above. Show Answer Correct Answer: B) Electromagnetic radiation. 5. Which of these waves can travel through empty space (a vacuum)? A) Water. B) Light. C) Sound. D) None of the above. Show Answer Correct Answer: B) Light. 6. What is one of the uses of gamma rays in the medical field? A) Improving vision. B) Sterilizing medical equipment. C) Enhancing physical strength. D) Preserving food. Show Answer Correct Answer: B) Sterilizing medical equipment. 7. What is the approximate wavelength range of visible light? A) 1 m to 10 m. B) 1 mm to 10 mm. C) 400 nm to 700 nm. D) 10 nm to 100 nm. Show Answer Correct Answer: C) 400 nm to 700 nm. 8. Most energetic wavelength of light A) Radio. B) Infrared. C) Microwave. D) Gamma. Show Answer Correct Answer: D) Gamma. 9. These materials transmit most of the light that pass through them. A) Translucent. B) Transparent. C) Opaque. D) Reflective. Show Answer Correct Answer: B) Transparent. 10. Which type of EM waves is the most energetic? A) Microwaves. B) Ultraviolet rays. C) X-rays. D) Gamma rays. Show Answer Correct Answer: D) Gamma rays. 11. A wave has a wavelength of 1 m and a speed of 200 m/s. What is the frequency of the wave? A) 20 m/s. B) 200 Hz. C) 200 m/s. D) 20 Hz. Show Answer Correct Answer: B) 200 Hz. 12. High energy radiation from the Sun can cause damage to the cells of organisms. Which is not a type of high energy radiation? A) X-ray. B) Gamma radiation. C) Ultraviolet radiation. D) Microwave radiation. Show Answer Correct Answer: D) Microwave radiation. 13. Electromagnetic wave with a wavelength between about 0.1 mm and 30 cm A) Microwave. B) Infrared wave. C) Ultraviolet wave. D) Visible light. Show Answer Correct Answer: A) Microwave. 14. A ..... is a high-energy electromagnetic wave with a shorter wavelength and higher frequency than all other types of electromagnetic waves. A) Radio waves. B) Infrared waves. C) Ultraviolet waves. D) Gamma rays. Show Answer Correct Answer: D) Gamma rays. 15. Through what kind of matter does light move fastest? A) Liquids. B) Air. C) Matter that is lighter in color. D) Matter that is in larger objects. Show Answer Correct Answer: B) Air. 16. True or False:All electromagnetic waves travel at the same speed-the speed of light. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 17. Which color has the longest wavelength and shortest frequency? A) Red. B) Yellow. C) Blue. D) Violet. Show Answer Correct Answer: A) Red. 18. A campfire emits- A) Ultraviolet waves. B) Gamma waves. C) Carbon Dioxide. D) Light waves. E) Infrared Waves. Show Answer Correct Answer: E) Infrared Waves. 19. In the visible spectrum, which color has the shortest wavelength? A) Blue. B) Green. C) Red. D) Violet. Show Answer Correct Answer: D) Violet. 20. The speed of light in a vacuum is approximately ..... meters per second. A) 100, 000, 000. B) 500, 000, 000. C) 1, 000, 000, 000. D) 299, 792, 458. Show Answer Correct Answer: D) 299, 792, 458. 21. Which color absorbs the most radiation of the options below? A) Black. B) White. C) Yellow. D) None of the above. Show Answer Correct Answer: A) Black. 22. True or False:Only warm objects emit (give off) radiation. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: B) False. 23. Which of the following theories can explain the bending of light as it passes through a new medium? A) Particle theory of light. B) Wave theory of light. C) Kinetic theory. D) Classical mechanics. Show Answer Correct Answer: B) Wave theory of light. 24. Cellular telephones utilize A) Radar waves. B) Very high frequency waves. C) Very low frequency waves. D) Microwaves. Show Answer Correct Answer: D) Microwaves. 25. What happens to the speed of electromagnetic waves as they move from a vacuum into a medium like glass? A) It increases. B) It decreases. C) It remains the same. D) It becomes zero. Show Answer Correct Answer: B) It decreases. ← 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 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