This quiz works best with JavaScript enabled. Home > Class 12 > Class 12 Physics (Part I) Chapter 8 Electromagnetic Waves – Quiz 43 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 12 Physics (Part I) Chapter 8 Electromagnetic Waves Quiz 43 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Light waves can travel through empty space. Light does not require a medium to travel through. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 2. What is the relationship between the frequency and wavelength of an electromagnetic wave? 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. 3. Who made the theoretical prediction that electromagnetic waves travel through a vacuum at the speed of light? A) Andrei Marie Ampere. B) Michael Faraday. C) Heinrich Hertz. D) James Clerk Maxwell. Show Answer Correct Answer: D) James Clerk Maxwell. 4. What is the term used to describe the maximum distance that a sound wave displaces air molecules from their original undisturbed position? A) Amplitude. B) Speed. C) Frequency. D) Wavelength. Show Answer Correct Answer: A) Amplitude. 5. All matter contains charged particles that are always moving. A) False. B) True. C) All the above. D) None of the above. Show Answer Correct Answer: B) True. 6. Wavelength = 3.57x10$^{-7}$ m$^{}$Frequency =?$^{}$ A) 8.40x10$^{14}$. B) 1.19x10$^{-15}$. C) 1.07x10$^{2}$. D) 2.37x10$^{-40}$. Show Answer Correct Answer: A) 8.40x10$^{14}$. 7. Infrared rays have a higher frequency than ..... A) Ultraviolet rays. B) X-rays. C) Radio waves. D) Gamma rays. Show Answer Correct Answer: C) Radio waves. 8. What are electromagnetic waves made up of? A) Vibrating electric fields only. B) Vibrating magnetic fields only. C) Both vibrating electric and magnetic fields. D) Neither electric nor magnetic fields. Show Answer Correct Answer: C) Both vibrating electric and magnetic fields. 9. Which of the following electromagnetic wave has the greatest wavelength? A) Infrared ray. B) Ultraviolet ray. C) Radio wave. D) Microwave. Show Answer Correct Answer: C) Radio wave. 10. What electromagnetic wave commonly used by astrophysicists when collecting data from space? A) Gamma rays. B) Ultraviolet rays. C) Visible light. D) Radiowave. Show Answer Correct Answer: D) Radiowave. 11. What is one of the uses of microwaves in communication? A) They can only travel through a vacuum. B) They are absorbed by clouds and smoke. C) They can penetrate clouds, smoke, and light rain. D) They are mainly used for long-range communication in clear weather. Show Answer Correct Answer: C) They can penetrate clouds, smoke, and light rain. 12. Which model of light helps explain the photoelectric effect? A) The wave model. B) The polarizing model. C) The particle model of light. D) The electromagnetic model. Show Answer Correct Answer: C) The particle model of light. 13. Electromagnetic waves put in order of frequency is known as A) Electricity. B) Electromagnetic magnets. C) Electromagnetic flux. D) Electromagnetic spectrum. Show Answer Correct Answer: D) Electromagnetic spectrum. 14. What do radio waves, microwaves, X-rays, and gamma rays all have in common? A) They all have the same wavelength. B) They are electromagnetic waves. C) They are detected in the same way. D) They store the same amount of energy. Show Answer Correct Answer: B) They are electromagnetic waves. 15. The waves with the longest wavelength in the electromagnetic spectrum are ..... A) X-rays. B) Infrared waves. C) Gamma rays. D) Radio waves. Show Answer Correct Answer: D) Radio waves. 16. Wavelength = v / f A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 17. The highest point of a wave is known as the ..... A) Wavelength. B) Trough. C) Amplitude. D) Crest. Show Answer Correct Answer: D) Crest. 18. Speed of sound is more in solids than in air ..... A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 19. Which of the following waves are used in satellite communication and cooking ..... A) Micro waves. B) Radio waves. C) X-rays. D) Infrared light. Show Answer Correct Answer: A) Micro waves. 20. Treatment of jaundice. Purification of drinking water. Sterelising surgical instruments and food. These are the application of A) Infrared ray. B) X Ray. C) Ultraviolet ray. D) Microwave. Show Answer Correct Answer: C) Ultraviolet ray. 21. During a concert, the sound from the speakers is transferred to the audience through ..... A) Vibrations. B) Stacking objects. C) An ordered sequence. D) Colors. Show Answer Correct Answer: A) Vibrations. 22. A wave with a SHORTER wavelength has ..... energy than one with a longer wavelength. A) More. B) Less. C) The Same. D) None of the above. Show Answer Correct Answer: A) More. 23. Electromagnetic waves can behave as particles called: A) Plasma. B) Electrons. C) Photons. D) None of these. Show Answer Correct Answer: C) Photons. 24. When traveling through unchanging conditions, the path of a light wave is a A) Straight line. B) Zig zag line. C) Random curve. D) None of the above. Show Answer Correct Answer: A) Straight line. 25. Electromagnetic waves transfer ..... and energy. A) Matter and energy. B) Sound and energy. C) Light and matter. D) Information and energy. Show Answer Correct Answer: D) Information and energy. ← 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