This quiz works best with JavaScript enabled. Home > Cbse > Class 12 > Science > Physics Part I > 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 (60 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. This is how we perceive the amplitude (intensity) of EM waves (light). (Vocab) A) Volume. B) Pitch. C) Smell. D) Color. E) Brightness. Show Answer Correct Answer: E) Brightness. 2. When vibrating electrons lose energy, they emit A) Kinetic energy. B) Electromagnetic waves. C) Particles. D) None of the above. Show Answer Correct Answer: B) Electromagnetic waves. 3. Which of the following lists correctly identifies the colors of white light in order of increasing wavelength? A) Blue, green, yellow, orange, red, violet, indigo. B) Red, orange, yellow, green, blue, indigo, violet. C) Green, yellow, orange, red, blue, indigo, violet. D) Violet, indigo, blue, green, yellow, orange, red. Show Answer Correct Answer: B) Red, orange, yellow, green, blue, indigo, violet. 4. Which electromagnetic waves are used in sunbeds for tanning? A) Infrared waves. B) Ultraviolet waves. C) Radio waves. D) Microwaves. Show Answer Correct Answer: B) Ultraviolet waves. 5. What is the description for ultraviolet rays? A) Has the least amount of energy. B) Causes skin to tan. C) Allows night vision. D) See broken bones. Show Answer Correct Answer: B) Causes skin to tan. 6. Cancer can be treated with ..... waves. A) Gamma. B) Infrared. C) Radio. D) Penicillin. Show Answer Correct Answer: A) Gamma. 7. A medium can be a ..... A) Solid. B) Liquid. C) Gas. D) All of the above. Show Answer Correct Answer: D) All of the above. 8. Which of the following statements is true about the energy carried by electromagnetic waves? A) Energy is independent of frequency and wavelength. B) Energy is directly proportional to frequency. C) Energy is inversely proportional to frequency. D) Energy is directly proportional to wavelength. Show Answer Correct Answer: B) Energy is directly proportional to frequency. 9. Which type of waves are used in radio and Television broadcasting? A) Radio waves. B) Infrared rays. C) X-rays. D) None of the above. Show Answer Correct Answer: A) Radio waves. 10. EM waves used in security scanning devices in airports A) X rays. B) Radio waves. C) Infrared. D) Ultraviolet. Show Answer Correct Answer: A) X rays. 11. Noah, Mia, and Mason are on a space adventure! They come across some mysterious waves that have wavelengths shorter than ultraviolet rays but longer than gamma rays. Can you help them identify these waves? A) X-rays. B) Stingrays. C) Infrared rays. D) Gamma rays. Show Answer Correct Answer: A) X-rays. 12. Where must the object be placed to produce a larger image using a convex lens? A) At F'. B) Beyond 2F'. C) Between F' and V. D) Between 2F' and F'. Show Answer Correct Answer: B) Beyond 2F'. 13. Any moving electric charge is surrounded by an ..... and a magnetic field. A) Electric light. B) Magnetic field. C) Electric field. D) None of the above. Show Answer Correct Answer: C) Electric field. 14. What waves do you use to heat food? A) Ultraviolet waves. B) Gamma Waves. C) Microwaves. D) Radio Waves. Show Answer Correct Answer: C) Microwaves. 15. What type of electromagnetic waves are used in night vision goggles? A) X-rays. B) Infrared waves. C) Radio waves. D) Gamma rays. Show Answer Correct Answer: B) Infrared waves. 16. What does A in AM stand for? A) Amplitude. B) Astronomical. C) Antenna. D) Alpha centauri. Show Answer Correct Answer: A) Amplitude. 17. How long does it take for Mars to have its Speed of light reach Earth? A) An hour. B) One minute. C) 8 minutes. D) Several minutes. Show Answer Correct Answer: C) 8 minutes. 18. A transverse wave can be created in a Slinky$^{\textregistered}$ by moving it A) Side to side. B) In a circular motion. C) Together and apart. D) Up and down. Show Answer Correct Answer: D) Up and down. 19. Which of the following is not an electromagnetic wave ..... A) Seismic waves. B) X-rays. C) Micro waves. D) Radio waves. Show Answer Correct Answer: A) Seismic waves. 20. The energy that electromagnetic waves transfer through matter is called A) Electricity. B) Electromagnetic magnetism. C) Electromagnetic radiation. D) Electromagnetic subjugation. Show Answer Correct Answer: C) Electromagnetic radiation. 21. Light is a kind of energy that travels in A) Frequencies. B) Wave lengths. C) Color. D) Waves. Show Answer Correct Answer: D) Waves. 22. Plank's constant, h, equals A) 6.626x10$^{-34 }$Js. B) 6.022x10$^{23 }$Js. C) 1.06x10$^{-19 }$Js. D) 2.998x10$^{8 }$Js. Show Answer Correct Answer: A) 6.626x10$^{-34 }$Js. 23. Evelyn, Jackson, and Aria are on a space adventure! They encounter a mysterious wave that has wavelengths shorter than ultraviolet rays but longer than gamma rays. Can you help them identify it? A) X-rays. B) Stingrays. C) Infrared rays. D) Gamma rays. Show Answer Correct Answer: A) X-rays. 24. ..... is the speed at which a wave travels. A) Frequency. B) Wave Speed. C) Trough. D) Amplitude. E) I do not know and do not wish to answer. Show Answer Correct Answer: B) Wave Speed. 25. Polarized light is ..... A) The light that passes through a polarizing filter. B) The light that is stopped by the polarizing filter. C) The many different directions in which light travels. D) None of the above. Show Answer Correct Answer: A) The light that passes through a polarizing filter. 26. What is the third lowest electromagnetic wave on the electromagnetic spectrum? A) Microwave. B) Visible Light. C) Infrared. D) Radio Waves. Show Answer Correct Answer: A) Microwave. 27. Frequency = 1.05x10$^{15 }$HzWavelength =? A) 3.15x10$^{23}$. B) 6.96x10$^{-19}$. C) 3.50x10$^{6}$. D) 2.86x10$^{-7}$. Show Answer Correct Answer: D) 2.86x10$^{-7}$. 28. How does a light wave change as it travels into a denser medium during refraction (air into water)? A) Its frequency decreases. B) Its speed increases. C) Its frequency increases. D) Its speed decreases. Show Answer Correct Answer: D) Its speed decreases. 29. 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. 30. What is the relationship between the frequency and wavelength of an electromagnetic wave? A) They are inversely proportional. B) They are unrelated. C) They are directly proportional. D) They are equal. Show Answer Correct Answer: A) They are inversely proportional. 31. 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. 32. What is the term used to describe the maximum distance that a sound wave displaces air molecules from their original undisturbed position? A) Frequency. B) Wavelength. C) Amplitude. D) Speed. Show Answer Correct Answer: C) Amplitude. 33. 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. 34. Wavelength = 3.57x10$^{-7}$ m$^{}$Frequency =?$^{}$ A) 1.07x10$^{2}$. B) 1.19x10$^{-15}$. C) 8.40x10$^{14}$. D) 2.37x10$^{-40}$. Show Answer Correct Answer: C) 8.40x10$^{14}$. 35. Infrared rays have a higher frequency than ..... A) Gamma rays. B) Ultraviolet rays. C) X-rays. D) Radio waves. Show Answer Correct Answer: D) Radio waves. 36. 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. 37. Which of the following electromagnetic wave has the greatest wavelength? A) Radio wave. B) Ultraviolet ray. C) Microwave. D) Infrared ray. Show Answer Correct Answer: A) Radio wave. 38. What electromagnetic wave commonly used by astrophysicists when collecting data from space? A) Gamma rays. B) Radiowave. C) Visible light. D) Ultraviolet rays. Show Answer Correct Answer: B) Radiowave. 39. 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. 40. Which model of light helps explain the photoelectric effect? A) The particle model of light. B) The polarizing model. C) The wave model. D) The electromagnetic model. Show Answer Correct Answer: A) The particle model of light. 41. Electromagnetic waves put in order of frequency is known as A) Electromagnetic magnets. B) Electromagnetic flux. C) Electricity. D) Electromagnetic spectrum. Show Answer Correct Answer: D) Electromagnetic spectrum. 42. 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. 43. The waves with the longest wavelength in the electromagnetic spectrum are ..... A) X-rays. B) Infrared waves. C) Radio waves. D) Gamma rays. Show Answer Correct Answer: C) Radio waves. 44. Wavelength = v / f A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 45. 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. 46. Which of the following waves are used in satellite communication and cooking ..... A) Micro waves. B) Infrared light. C) Radio waves. D) X-rays. Show Answer Correct Answer: A) Micro waves. 47. Treatment of jaundice. Purification of drinking water. Sterelising surgical instruments and food. These are the application of A) X Ray. B) Infrared ray. C) Ultraviolet ray. D) Microwave. Show Answer Correct Answer: C) Ultraviolet ray. 48. During a concert, the sound from the speakers is transferred to the audience through ..... A) An ordered sequence. B) Colors. C) Vibrations. D) Stacking objects. Show Answer Correct Answer: C) Vibrations. 49. 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. 50. Electromagnetic waves can behave as particles called: A) Plasma. B) Electrons. C) Photons. D) None of these. Show Answer Correct Answer: C) Photons. 51. 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. 52. 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. 53. As frequency increases, wavelength becomes bigger. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: B) False. 54. How fast the wave is moving through a medium (a) A) Amplitude. B) Wavelength. C) Frequency. D) A. wave speed. Show Answer Correct Answer: D) A. wave speed. 55. Which one is a type of ionizing radiation? A) Microwaves. B) Radio waves. C) Gamma rays. D) Infrared. Show Answer Correct Answer: C) Gamma rays. 56. ..... is the device that uses electromagnetic waves to receive and transmit signals for communication. A) Refrigerator. B) Mobile phone. C) Microwave. D) Television. Show Answer Correct Answer: B) Mobile phone. 57. When an electron emits a photon of light, it also ..... A) Gains negative charge. B) Decreases energy level. C) Increases energy level. D) Gains positive charge. Show Answer Correct Answer: B) Decreases energy level. 58. Which scientist proved light acts like a wave by causing intereference patterns to form A) Isaac Newton. B) Alfred Michelson. C) Einstein. D) Thomas Young. Show Answer Correct Answer: D) Thomas Young. 59. This describes when the atoms of matter absorb light, and converts the light into thermal energy. A) Absorption. B) Reflection. C) Refraction. D) Transmission. Show Answer Correct Answer: A) Absorption. 60. In ..... waves, matter in the medium moves back and forth at right angles to the direction the wave travels. A) Transverse. B) Longitudinal. C) Light. D) Sound. Show Answer Correct Answer: A) Transverse. ← PreviousNext →Related QuizzesScience QuizzesClass 12 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 8 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books