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 3 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 12 Physics (Part I) Chapter 8 Electromagnetic Waves Quiz 3 (60 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. What is the third highest electromagnetic wave on the electromagnetic spectrum? A) Visible Light. B) Ultraviolet. C) Gamma Ray. D) X-Ray. Show Answer Correct Answer: B) Ultraviolet. 2. Electromagnetic waves with wavelengths of 700 to 400 billionths of a meter that can be detected by human eyes A) Infrared waves. B) Ultraviolet waves. C) Microwaves. D) Visible light. Show Answer Correct Answer: D) Visible light. 3. A wave that can travel through empty space and through matter is called an ..... A) Radio wave. B) Radiant wave. C) Electromagnetic wave. D) Heat wave. Show Answer Correct Answer: C) Electromagnetic wave. 4. Why are X-rays used in imaging of broken bones, rather than radio waves? A) X-Rays have a lower frequency range than radio waves. B) X-rays have higher penetrating energy than radio waves. C) X-Rays have lower penetrating energy than radio waves. D) X-Rays have longer wavelengths than radio waves. Show Answer Correct Answer: B) X-rays have higher penetrating energy than radio waves. 5. Which particle is a wave of light? A) Electron. B) Photon. C) Proton. D) Neutron. Show Answer Correct Answer: B) Photon. 6. Microphones and cameras are examples of which component in radio communication? A) Input transducer. B) Modulator. C) Demodulator. D) Output transducer. Show Answer Correct Answer: A) Input transducer. 7. What is the frequency of red light that has a wavelength of $7.5\\times10^{-7}$ A) $4\times10^{-14}$. B) $4\times10^{14}$. C) $2.5\times10^{14}$. D) $2.5\times10^{-14}$. Show Answer Correct Answer: B) $4\times10^{14}$. 8. Which part of the electromagnetic spectrum has the LEAST amount of energy? A) Radio Waves. B) Gamma Rays. C) X-Rays. D) Microwaves. Show Answer Correct Answer: A) Radio Waves. 9. Which scientist demonstrated the magnetic effect based on the direction of current? A) Andre-Marie Ampere. B) Michael Faraday. C) Heinrich Hertz. D) Hans Christian Oersted. Show Answer Correct Answer: A) Andre-Marie Ampere. 10. What is the part of a longitudinal wave where particles are close together? A) Trough. B) Wave Crest. C) Rarefaction. D) Compression. Show Answer Correct Answer: D) Compression. 11. These are examples of phenomenon of scattering of light except A) Sky appears blue at midday. B) Sky appears reddish in the evening. C) Rainbow after rain. D) None of the above. Show Answer Correct Answer: C) Rainbow after rain. 12. Is the following sentence true or false? Electromagnetic waves need a medium to travel through. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: B) False. 13. What electromagnetic wave used in sterilizing water from drinking fountains? A) Microwaves. B) Infrared rays. C) Gamma rays. D) Ultraviolet rays. Show Answer Correct Answer: D) Ultraviolet rays. 14. Why are X-rays useful in medical imaging? A) They are visible to the human eye. B) They can pass through soft tissues but are absorbed by bones. C) They are safe for all living tissues. D) They are used to sterilize equipment. Show Answer Correct Answer: B) They can pass through soft tissues but are absorbed by bones. 15. Which statement about the electromagnetic spectrum is accurate? A) Gamma waves travel slower than radio waves. B) Ultraviolet waves make up most of the spectrum. C) X-rays travel slower than infrared waves. D) Visible light waves are a small part of the spectrum. Show Answer Correct Answer: D) Visible light waves are a small part of the spectrum. 16. A packet of light energy is called a A) Futon. B) Photon. C) Foot ball. D) Photo. Show Answer Correct Answer: B) Photon. 17. Which electromagnetic wave is commonly used in microwave ovens? A) Microwave. B) Infrared wave. C) Ultraviolet wave. D) Radio wave. Show Answer Correct Answer: A) Microwave. 18. Which type of electromagnetic wave is commonly used for sterilizing medical equipment? A) Infrared. B) Ultraviolet. C) Visible light. D) Radio waves. Show Answer Correct Answer: B) Ultraviolet. 19. Electromagnetic wave that our our eyes are sensitive to A) Infrared. B) Ultraviolet. C) Gamma ray. D) Light. Show Answer Correct Answer: D) Light. 20. How is the energy associated with an electromagnetic wave related to the frequency of the wave? A) As the frequency increases, the energy of the wave increases. B) As the frequency increases, the energy of the wave decreases. C) The energy of an electromagnetic wave is not related to its frequency. D) None of the above. Show Answer Correct Answer: A) As the frequency increases, the energy of the wave increases. 21. What demonstrates the correct order that allows us to see? A) Light source, object, our eyes. B) Our eyes, light source, object. C) Object, light source, our eyes. D) Object makes light, light travels to our eyes. Show Answer Correct Answer: A) Light source, object, our eyes. 22. What type of electromagnetic wave is used in radar technology to detect the speed of a car? A) Gamma rays. B) Microwaves. C) X-rays. D) Infrared waves. Show Answer Correct Answer: B) Microwaves. 23. Cell phones transmit and receive ..... waves. A) Gamma. B) Infrared. C) Radio. D) Micra. Show Answer Correct Answer: D) Micra. 24. It is used in satellite communication A) Ultraviolet rays. B) Gamma Rays. C) Infrared. D) Microwave. Show Answer Correct Answer: D) Microwave. 25. What is wave-particle duality in the context of light? A) Light can exist as a solid object without any wave properties. B) Wave-particle duality refers to the concept that light exhibits both wave-like and particle-like properties. C) Wave-particle duality applies only to sound waves. D) Light only behaves as a wave and not as a particle. Show Answer Correct Answer: B) Wave-particle duality refers to the concept that light exhibits both wave-like and particle-like properties. 26. As photons travel farther from the source, the ..... of light decreases. A) Speed. B) Frequency. C) Intensity. D) Wavelength. Show Answer Correct Answer: C) Intensity. 27. 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?. 28. 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. 29. What do you call the sound quality that gives a unique tone to a human voice or the sound of an instrument? A) Timbre. B) Musical sounds. C) Range. D) Volume. Show Answer Correct Answer: A) Timbre. 30. Can you help identify the wave that has wavelengths shorter than ultraviolet rays but longer than gamma rays? A) X-rays. B) Gamma rays. C) Stingrays. D) Infrared rays. Show Answer Correct Answer: A) X-rays. 31. 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. 32. An example of a wave with a short wavelength, high frequency, and high energy is a A) X-ray. B) Infrared wave. C) Microwave. D) Visible light wave. Show Answer Correct Answer: A) X-ray. 33. Which of the following electromagnetic waves is given off as heat? A) Infrared Rays. B) Radio Waves. C) Gamma Rays. D) Visible Light. Show Answer Correct Answer: A) Infrared Rays. 34. 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. 35. 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. 36. 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. 37. Which type of electromagnetic wave is primarily used in night vision technology? A) Microwaves. B) Radio waves. C) Infrared waves. D) Ultraviolet waves. Show Answer Correct Answer: C) Infrared waves. 38. What is the description for gamma rays? A) Used for night vision. B) Used in cell phones. C) Kills cancer cells. D) Causes skin to tan. Show Answer Correct Answer: C) Kills cancer cells. 39. All electromagnetic waves have the same ..... in free space. A) Speed. B) Wavelength. C) Amplitude. D) Frequency. Show Answer Correct Answer: A) Speed. 40. What are electromagnetic waves? A) Electric & magnetic fields (energy) that travel through empty space very quickly. B) Sound waves. C) Things like longitudinal waves. D) Someone's name. Show Answer Correct Answer: A) Electric & magnetic fields (energy) that travel through empty space very quickly. 41. What is the term for a wave that requires a medium to travel? A) Transverse wave. B) Mechanical wave. C) Longitudinal wave. D) Electromagnetic wave. Show Answer Correct Answer: B) Mechanical wave. 42. 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. 43. All of these types of waves travel from the Sun to Earth except ..... A) Infrared waves. B) Ultraviolet waves. C) Light waves. D) Sound waves. Show Answer Correct Answer: D) Sound waves. 44. Which type of wave has a wave perpedicular to the disturbance? A) Transverse. B) Longitudinal. C) Mechanical. D) Surface. Show Answer Correct Answer: A) Transverse. 45. Human can sense ionizing radiations. A) TRUE. B) FALSE. C) MAYBE. D) None of the above. Show Answer Correct Answer: B) FALSE. 46. Electromagnetic waves are longitudinal waves. A) TRUE. B) FALSE. C) All the above. D) None of the above. Show Answer Correct Answer: B) FALSE. 47. Which electromagnetic waves are used in medical imaging to view the inside of the human body? A) X-rays. B) Gamma rays. C) Radio waves. D) Ultraviolet rays. Show Answer Correct Answer: A) X-rays. 48. 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. 49. The sounds made by tuning forks or other harmonic oscillating bodies are called musical sounds A) Musical sounds. B) Frequency. C) Tone. D) Timbre. Show Answer Correct Answer: A) Musical sounds. 50. A student is measuring the distance between the crest and the rest position of both a mechanical wave and an electromagnetic wave. Which question is the student trying to answer? A) What is the speed of the waves?. B) What is the amplitude of the waves?. C) What is the wavelength of the waves?. D) What is the frequency of the waves?. Show Answer Correct Answer: B) What is the amplitude of the waves?. 51. Which scientist performed an experiment to calculate the speed of light using mirrors A) Einstein. B) Isaac Newton. C) Thomas Young. D) Alfred Michelson. Show Answer Correct Answer: D) Alfred Michelson. 52. This wave has an amplitude. A) Electromagentic. B) Mechanical. C) Both. D) None of the above. Show Answer Correct Answer: C) Both. 53. When a wave bends around another object, what is happening? A) Reflection. B) Refraction. C) Reference. D) Diffraction. Show Answer Correct Answer: D) Diffraction. 54. In a longitudinal wave, the medium travels ..... to the direction of wave motion A) Perpendicular. B) Parallel. C) All the above. D) None of the above. Show Answer Correct Answer: B) Parallel. 55. What electromagnetic wave that can penetrate the flesh but not the bones? A) X-ray. B) Infrared. C) Microwave. D) Radiowave. Show Answer Correct Answer: A) X-ray. 56. Which of the following properties is unique to electromagnetic waves compared to mechanical waves? A) They require a medium to travel through. B) They can travel through a vacuum. C) They have a fixed speed in all media. D) They are always visible to the human eye. Show Answer Correct Answer: B) They can travel through a vacuum. 57. Maxwell's equations describe the fundamental laws of A) Electricity only. B) Magnetism only. C) Mechanics only. D) Both (A) and (B). Show Answer Correct Answer: D) Both (A) and (B). 58. What kind of electromagnetic radiation has the highest energy? A) Visible light. B) Ultraviolet rays. C) Gamma rays. D) X-rays. Show Answer Correct Answer: C) Gamma rays. 59. Wavelength can be measured from one top of a wave to the next top of a wave. It can also be measured from one bottom of a wave to the next bottom of the wave A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 60. Energy that travels from the sun travels in the form of a wave we call ..... A) Electric energy. B) Magnetic energy. C) Solar electric energy. D) Electromagnetic energy. Show Answer Correct Answer: D) Electromagnetic energy. ← 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 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 9 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books