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 13 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 12 Physics (Part I) Chapter 8 Electromagnetic Waves Quiz 13 (60 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. This wave has a wavelngth. A) Electromagentic. B) Mechanical. C) Both. D) None of the above. Show Answer Correct Answer: C) Both. 2. Which has a higher frequency? A) Visible light. B) Ultraviolet rays. C) All the above. D) None of the above. Show Answer Correct Answer: B) Ultraviolet rays. 3. The Photoelectric Effect proved that light is a A) Wave because the light interfered with itself creating a dot pattern. B) Wave because brighter light transfers more energy. C) Particle because the energy of the individual photons determines the energy transferred. D) Particle because two distinct bands were created. Show Answer Correct Answer: C) Particle because the energy of the individual photons determines the energy transferred. 4. Electromagnetic waves are considered longitudinal waves A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: B) False. 5. Mr. H catches the news on 780 AM, which broadcasts at 780. kHz. Determine the wavelength of these radio waves. A) 3.85 x 10$^{5}$ m. B) 3.85 x 10$^{6}$ m. C) 3.85 x 10$^{4}$ m. D) 385 m. Show Answer Correct Answer: D) 385 m. 6. They are used to treat cancer through the process called radiotherapy. A) Visible light. B) Gamma Rays. C) Radio waves. D) X-rays. Show Answer Correct Answer: B) Gamma Rays. 7. A sound wave needs particles to travel through? A) Yes. B) No. C) All the above. D) None of the above. Show Answer Correct Answer: A) Yes. 8. Elijah, Abigail, and Mason are on a space adventure! They come across an alien who asks them a question to pass. The alien asks, 'Which type of electromagnetic wave has the shortest wavelengths and highest frequencies?' A) Ultraviolet rays. B) Gamma rays. C) X-rays. D) Infrared rays. Show Answer Correct Answer: B) Gamma rays. 9. Electromagnetic waves are made up of an electric field and a magnetic field that oscillate (?) to one another A) Parallelly. B) Perpendicularly. C) All the above. D) None of the above. Show Answer Correct Answer: B) Perpendicularly. 10. What is the primary function of the commutator in a simple electric motor? A) It provides an electric and magnetic field. B) It carefully holds the motor casing together. C) It reverses the direction of current flow in the coil. D) It converts mechanical energy into electrical energy. Show Answer Correct Answer: C) It reverses the direction of current flow in the coil. 11. A sound wave can best be described as a: A) Longitudinal wave caused by the motion of water. B) Longitudinal wave caused by the vibration of a medium. C) Transverse wave that passes through a vacuum. D) Transverse wave caused by a compression of particles. Show Answer Correct Answer: B) Longitudinal wave caused by the vibration of a medium. 12. Sound waves can travel through a vacuum because they don't require particles. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: B) False. 13. This has lower energy than that of red from visible light. A) Ultraviolet. B) Infrared. C) Visible light. D) None of the above. Show Answer Correct Answer: B) Infrared. 14. Which type of electromagnetic wave is primarily used in remote controls for televisions? A) Infrared waves. B) Ultraviolet waves. C) Microwaves. D) Radio waves. Show Answer Correct Answer: A) Infrared waves. 15. Which electromagnetic waves have the longest wavelengths? A) Ultraviolet. B) Visible light. C) Radio waves. D) Infrared rays. Show Answer Correct Answer: C) Radio waves. 16. Different Em waves have different properties which can affect human health. What are the effects of X-Rays and Gamma Rays? A) They are mostly reflected or absorbed by skin causing heating which may be dangerous, Gamma Rays can also cause burns if the skin gets too hot. B) They are ionising so they can cause mutations and damage cells which can lead to cancer, they can also be absorbed by deeper tissue. C) All the above. D) None of the above. Show Answer Correct Answer: B) They are ionising so they can cause mutations and damage cells which can lead to cancer, they can also be absorbed by deeper tissue. 17. What color has the shortest wavelength? A) Green. B) Blue. C) Violet. D) Red. Show Answer Correct Answer: C) Violet. 18. Sunscreen is designed to protect your skin from exposure to too much ..... A) Ultraviolet radiation. B) Visible light. C) Gamma radiation. D) Infrared radiation. Show Answer Correct Answer: A) Ultraviolet radiation. 19. The frequency of the produced wave is inversely proportional to the period A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 20. If a wave has a high amplitude, it will have ..... energy. A) High. B) Medium. C) Low. D) None of the above. Show Answer Correct Answer: A) High. 21. Sometime light behaves like a A) Stream of particles. B) Stream of electricity. C) Stream of water. D) Stream of light. Show Answer Correct Answer: A) Stream of particles. 22. Why is the electromagnetic spectrum important in understanding wave applications? A) It categorizes different waves based on their danger to humans. B) It only includes visible light, which is essential for human vision. C) It helps identify which waves are best for certain technologies. D) It shows which waves are the most colorful. Show Answer Correct Answer: C) It helps identify which waves are best for certain technologies. 23. The medical profession uses ..... to sterilize medical equipment-just like the google cabinet in the science classroom. A) Infrared. B) X ray. C) Gamma. D) Ultraviolet. Show Answer Correct Answer: D) Ultraviolet. 24. Which of the following statement about electromagnetic waves is correct? A) They are longitudinal waves. B) The velocity of the waves is affected by the frequency. C) They cannot propagate through vacuum. D) They do not need medium for propagation. Show Answer Correct Answer: D) They do not need medium for propagation. 25. What happens when a mechanical wave travels through the ocean? A) Particles are transferred. B) Mass is transferred. C) Waves are transferred. D) Energy is transferred. Show Answer Correct Answer: D) Energy is transferred. 26. What type of electromagnetic waves are used to take pictures of bones in medicine? A) Gamma rays. B) X-Rays. C) Ultraviolet. D) Radio waves. Show Answer Correct Answer: B) X-Rays. 27. What fills the universe related to microwaves? A) Radioactive microwave particles. B) Microwave dark matter. C) Cosmic microwave background radiation. D) Microwave energy fields. Show Answer Correct Answer: C) Cosmic microwave background radiation. 28. Electromagnetic radiation is caused by A) The oscillation of gravity. B) The oscillation of a magnet. C) The oscillation of a tape delay pedal. D) The oscillation of an electric charge. Show Answer Correct Answer: D) The oscillation of an electric charge. 29. Which of the following are in the correct order from least to greatest frequency? A) Gamma, Visible, Radio. B) Radio, Visible, Gamma. C) Gamma, Radio, Visible. D) Visible, Radio, Gamma. Show Answer Correct Answer: B) Radio, Visible, Gamma. 30. What is a constellation? A) A grouping of several thousands of stars that forms a recognizalbe pattern. B) A grouping of several stars that forms a recognizable pattern. C) A collection of several galaxies. D) A collection of several solar systems. Show Answer Correct Answer: B) A grouping of several stars that forms a recognizable pattern. 31. Which change increases the kinetic energy of electrons ejected during the photoelectric effect? A) Increasing exposure time. B) Increasing wavelength. C) Increasing frequency. D) Increasing intensity. Show Answer Correct Answer: C) Increasing frequency. 32. These are the only wavelengths the human eye can see: A) Gamma Waves. B) X-rays. C) Radio Waves. D) Visible Light. Show Answer Correct Answer: D) Visible Light. 33. The speed of the wave depends on the energy carried by the wave. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 34. What characteristic do radio waves have compared to other electromagnetic waves? A) They are the least used for data transmission. B) They have the shortest wavelengths. C) They have the longest wavelengths. D) They have the highest frequency. Show Answer Correct Answer: C) They have the longest wavelengths. 35. What are photons? A) Bundles of mass moving through air. B) Massless bundles of energy. C) Ripples requiring a medium. D) Large pieces of matter. Show Answer Correct Answer: B) Massless bundles of energy. 36. In electromagnetic wave, electric and magnetic fields are ..... each other ..... A) Parallel. B) Perpendicular. C) All the above. D) None of the above. Show Answer Correct Answer: B) Perpendicular. 37. Electromagnetic waves are classified as longitudinal waves. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: B) False. 38. What is determined by the amplitude of oscillations of the sound-producing body? A) Amplitude of oscillations. B) Range. C) Volume. D) Tone. Show Answer Correct Answer: C) Volume. 39. What is the description for microwaves? A) Allows you to see. B) Can see broken bones. C) Used in cell phones. D) Has the least amount of energy. Show Answer Correct Answer: C) Used in cell phones. 40. In a crowded concert, the way sound travels from the stage to the audience is most similar to which type of wave motion? A) A wave where particles move in a circular motion. B) A wave where particles move parallel to the direction of the wave. C) A wave where particles move perpendicular to the direction of the wave. D) A wave where particles move in the opposite direction of the wave. Show Answer Correct Answer: B) A wave where particles move parallel to the direction of the wave. 41. A leaf that is green is actually green. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: B) False. 42. Which of these waves cannot travel in a vacuum? A) Microwave. B) Light wave. C) Electromagnetic wave. D) Sound wave. Show Answer Correct Answer: D) Sound wave. 43. All waves carry ..... A) Water. B) Sound. C) Light. D) Energy. Show Answer Correct Answer: D) Energy. 44. Which of the following EM wave has the lowest frequency? A) Radio wave. B) X-ray. C) Infrared wave. D) Visible light. Show Answer Correct Answer: A) Radio wave. 45. If you were to locate Earth's solar system within the Milky Way, which part would it be found in? A) In the halo surrounding the galaxy. B) At the very center of the galaxy. C) In the bulge at the edge of the galaxy. D) In one of the spiral arms, away from the center. Show Answer Correct Answer: D) In one of the spiral arms, away from the center. 46. Gamma rays are produced in which of the following events? A) Low energy nuclear reactions. B) Chemical reactions. C) High energy nuclear explosions and supernovas. D) Biological processes. Show Answer Correct Answer: C) High energy nuclear explosions and supernovas. 47. Light is an example of A) Surface Waves. B) Electromagnetic Waves. C) Sound Waves. D) None of the above. Show Answer Correct Answer: B) Electromagnetic Waves. 48. Electromagnetic waves are produced when a(n) ..... vibrates or accelerates. A) Photon. B) Electric charge. C) Magnetic field. D) Neutron. Show Answer Correct Answer: B) Electric charge. 49. An argon ion laser emits light at 488 nm. What is the frequency of this radiation? (1 nm = 1x10$^{-9}$m) A) 1.46 x 10$^{2}$ Hz. B) 4.07 x 10$^{-19}$ Hz. C) 2.05 x 10$^{6}$ Hz. D) 6.15 x 10$^{14}$ Hz. Show Answer Correct Answer: D) 6.15 x 10$^{14}$ Hz. 50. Electromagnetic waves can transfer energy without a(n) A) Magnetic field. B) Medium. C) Change in either a magnetic or an electric field. D) Electric field. Show Answer Correct Answer: B) Medium. 51. All of the following are used in communications EXCEPT ..... A) Gamma rays. B) Radars. C) Microwaves. D) Lasers. Show Answer Correct Answer: D) Lasers. 52. Imagine Jackson, Grace, and Emma are astronauts exploring the universe. They come across a mysterious phenomenon where electric and magnetic energy is being transferred through the vacuum of space. What type of wave is responsible for this transfer? A) Electromagnetic waves. B) Visible light. C) Microwaves. D) Radio waves. Show Answer Correct Answer: A) Electromagnetic waves. 53. UV rays from the sun are- A) Gamma Waves. B) Heat Waves. C) Light waves. D) Ultraviolet waves. E) Sound waves. Show Answer Correct Answer: D) Ultraviolet waves. 54. Frequency = 5.00x10$^{7}$ HzEnergy =? A) 1.33E-41. B) 1.50E+16. C) 3.31E-26. D) 7.55E+40. Show Answer Correct Answer: C) 3.31E-26. 55. It is used for optic fibers in wirings used for communication. A) Gamma rays. B) X-rays. C) Radio wave. D) Visible light. Show Answer Correct Answer: D) Visible light. 56. Destructive wave interference ..... A) Shifts phase. B) Increases amplitude. C) Locks phase. D) Decreases amplitude. Show Answer Correct Answer: D) Decreases amplitude. 57. THIS IS MADE UP OF RADIO WAVES, MICROWAVES, IRNFRARED RAYS, VISIBLE LIGHT, ULTRAVIOLET RAYS, X-RAYS, AND GAMMA RAYS. A) RADIO WAVES. B) ELECTROMAGNETIC SPECTRUM. C) THERMOGRAM. D) RADAR. Show Answer Correct Answer: B) ELECTROMAGNETIC SPECTRUM. 58. What happens to the frequency of electromagnetic wave if its wavelength increases? A) Doubles. B) Remains the same. C) Decreases. D) Increases as well. Show Answer Correct Answer: C) Decreases. 59. Choose the wave that can't travel through a vacuum. A) Gamma wave. B) Sound waves. C) Visible light. D) Radio waves. Show Answer Correct Answer: B) Sound waves. 60. How do radio waves differ from gamma rays in terms of energy? A) Gamma rays have lower energy than radio waves. B) Radio waves have higher energy than gamma rays. C) Radio waves and gamma rays have the same energy level. D) Radio waves have lower energy than gamma rays. Show Answer Correct Answer: D) Radio waves have lower energy than gamma rays. ← 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