This quiz works best with JavaScript enabled. Home > Class 12 > Class 12 Physics (Part I) Chapter 8 Electromagnetic Waves – Quiz 17 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 12 Physics (Part I) Chapter 8 Electromagnetic Waves Quiz 17 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Which type of electromagnetic wave is used in MRI (Magnetic Resonance Imaging) machines? A) Radio waves. B) X-rays. C) Gamma rays. D) Microwaves. Show Answer Correct Answer: A) Radio waves. 2. Which of the following best describes X-rays? 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: A) Used by medical professionals to "see" inside the body. 3. Which statement best describes how electromagnetic waves move through space? A) They require a solid medium to travel. B) They need air as their only medium. C) They can travel through a vacuum without a medium. D) They stop completely in empty space. Show Answer Correct Answer: C) They can travel through a vacuum without a medium. 4. The ..... of an electromagnetic wave determines its color in the visible spectrum. A) Frequency. B) Speed. C) Amplitude. D) Wavelength. Show Answer Correct Answer: A) Frequency. 5. The number of waves passing a given point each second is: A) Frequency. B) Wave speed. C) Wavelength. D) Amplitude. Show Answer Correct Answer: A) Frequency. 6. Which electromagnetic radiation has the highest penatrating ability and is emitted only during high-energy nuclear reaction? A) Gamma rays. B) Microwave radiation. C) Radio waves. D) X-rays. Show Answer Correct Answer: A) Gamma rays. 7. Some radar systems detect the size and shape of objects such as aircraft and geological terrain. Approximately what is the smallest observable detail utilizing 500-MHz radar? A) $0.6$. B) $6.0$. C) $60.0$. D) $6.0\times10^{-2}$. Show Answer Correct Answer: A) $0.6$. 8. Electromagnet waves transfer ..... without matter. A) Information. B) Energy. C) X rays. D) Medium. Show Answer Correct Answer: B) Energy. 9. What is the term for the highest point of a transverse wave? A) Crest. B) Trough. C) Wavebase. D) Amplitude. Show Answer Correct Answer: A) Crest. 10. Select the correct order of waves on the Electromagnetic Spectrum A) Radio, Micro, Infra, Visible, Ultra, X-ray, Gamma. B) Gamma, X-ray, Ultra, Vis, Infra, Micro, Radio. C) Vis, Micro, Infra, Ultra, X-ray, Gamma, Radio. D) Micro, Radio, Vis, Infra, Ultra, X-ray, Gamma. Show Answer Correct Answer: A) Radio, Micro, Infra, Visible, Ultra, X-ray, Gamma. 11. What is the fourth lowest electromagnetic wave on the electromagnetic spectrum? A) Microwave. B) Ultraviolet. C) Visible light. D) Infrared. Show Answer Correct Answer: D) Infrared. 12. This type of electromagnetic wave can be used to see inside luggage at an airport or in hospitals to see your bones. A) Gamma Rays. B) Visible Light. C) X Rays. D) Infrared Rays. Show Answer Correct Answer: C) X Rays. 13. Temperature variation of different parts of a person's body can be detected by analyzing the emission pattern of which type of electromagnetic radiation? A) Microwave. B) Infrared. C) Ultraviolet. D) X-rays. Show Answer Correct Answer: B) Infrared. 14. The magnetic and electric fields create each other again and again. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 15. What is the relationship between wavelength and frequency in the electromagnetic spectrum? A) They are directly proportional. B) They are inversely proportional. C) They are unrelated. D) They are equal. Show Answer Correct Answer: B) They are inversely proportional. 16. Which type of waves are used in energy efficient bulbs? A) Infrared. B) Ultraviolet. C) X-ray. D) Microwave. Show Answer Correct Answer: B) Ultraviolet. 17. Electromagnetic wave with a wavelength longer than about 10 cm, used for communication A) Radio wave. B) Microwave. C) Analog signal. D) Infrared wave. Show Answer Correct Answer: A) Radio wave. 18. Electromagnetic waves with the highest frequency are x-rays A) False. B) True. C) All the above. D) None of the above. Show Answer Correct Answer: A) False. 19. Maxwell guessed that visible light was an electromagnetic wave because of its ..... A) Energy. B) Frequency. C) Speed. D) Wavelength. Show Answer Correct Answer: C) Speed. 20. Does time stop at the Speed of Light? A) Yes, because when you speed up mass decreases. B) No, because time is nothing in space. C) Yes, because the faster you move in space, the slower you move in time. D) No, because its not possible!. Show Answer Correct Answer: C) Yes, because the faster you move in space, the slower you move in time. 21. Light waves that vibrate in only one plane is polarized light. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 22. When a charged particle moves, it produces a A) Field of gravity. B) Black hole. C) Magnetic field. D) Supernova. Show Answer Correct Answer: C) Magnetic field. 23. Waves can be used to examine internal body parts are ..... A) Radio waves. B) Visible light. C) Ultraviolet. D) X-rays. Show Answer Correct Answer: D) X-rays. 24. Which form of electromagnetic energy is so powerful that it can penetrate concrete and metal as well as being used to kill cancerous cells in the human body? A) Gamma rays. B) Ultraviolet rays. C) Radio waves. D) Microwaves. Show Answer Correct Answer: A) Gamma rays. 25. Sound waves are (a) waves. A) A. mechanical. B) Electromagnetic. C) All the above. D) None of the above. Show Answer Correct Answer: A) A. mechanical. ← 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