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 14 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 12 Physics (Part I) Chapter 8 Electromagnetic Waves Quiz 14 (60 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. What is a type of wave where the vibration is perpendicular to the direction the wave travels? A) Longitudinal waves. B) Perpendicular waves. C) Transverse waves. D) Reverse waves. Show Answer Correct Answer: C) Transverse waves. 2. Wavelength = 9.43x10$^{-3 }$m$^{}$Frequency =?$^{}$ A) 3.15x10$^{-11}$. B) 3.18x10$^{10}$. C) 6.25x10$^{-36}$. D) 2.83x10$^{6}$. Show Answer Correct Answer: B) 3.18x10$^{10}$. 3. If the vibration of particles in an acoustic wave is parallel to the direction of propagation of the wave, they are called ..... A) Longitudinal waves. B) Transverse wave. C) All the above. D) None of the above. Show Answer Correct Answer: A) Longitudinal waves. 4. Young's Double slit experiment 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: A) Wave because the light interfered with itself creating a dot pattern. 5. Which of the following EM waves transport? A) Wavelength. B) Electric charge. C) Energy. D) Frequency. Show Answer Correct Answer: C) Energy. 6. How fast is the Speed of Light? A) 299, 792, 458 meters per second. B) 297, 754, 875 meters per second. C) 265, 876, 456. D) None of the above. Show Answer Correct Answer: A) 299, 792, 458 meters per second. 7. In vacuum, Electromagnetic waves travel with the speed of ..... A) LIGHT. B) CHEETAH. C) SOUND. D) TSUNAMI. Show Answer Correct Answer: A) LIGHT. 8. How far apart are the skewers on the wave machine? A) 10 in. B) 5 cm. C) 5 in. D) 10 cm. Show Answer Correct Answer: B) 5 cm. 9. Genetic mutation is a permanent alteration in the genetic sequence which causes diversity among organisms. A) TRUE. B) FALSE. C) All the above. D) None of the above. Show Answer Correct Answer: A) TRUE. 10. The areas of a longitudinal waves where particles are spread far apart from each other are called: A) Amplitude. B) Wavelength. C) Rarefactions. D) Compressions. Show Answer Correct Answer: C) Rarefactions. 11. Do both mechanical and electromagnetic waves have frequency? A) Yes, both have frequency. B) Only mechanical waves have frequency. C) Only electromagnetic waves have frequency. D) Neither has frequency. Show Answer Correct Answer: A) Yes, both have frequency. 12. Which of the following wave does not travel in vacuum? A) Sound waves. B) Ultraviolet rays. C) X-ray. D) Microwaves. Show Answer Correct Answer: A) Sound waves. 13. The portion of the electromagnetic spectrum that your eye can detect is found between A) IR and UV. B) X and Gamma rays. C) Radio and microwaves. D) Microwaves and IR. Show Answer Correct Answer: A) IR and UV. 14. What is the description for infrared rays? A) Allows night vision. B) Kills cancer cells. C) Causes skin to tan. D) Used in cell phones. Show Answer Correct Answer: A) Allows night vision. 15. The most important source of light on Earth is the A) Fire. B) Sun. C) Moon. D) Lightbulbs. Show Answer Correct Answer: B) Sun. 16. Which electromagnetic wave is most suited for growing plants in a greenhouse? A) X-rays. B) Ultraviolet rays. C) Infrared rays. D) Visible light. Show Answer Correct Answer: D) Visible light. 17. Who first disovered the Speed of Light? A) Olaus Roemer. B) Some smart scientist . C) Galileo Galilee. D) Albert Einstein. Show Answer Correct Answer: A) Olaus Roemer. 18. Gamma ray has highest ..... in electromagnetic spectrum. A) Wavelength. B) Frequency. C) Amplitude. D) None of the above. Show Answer Correct Answer: B) Frequency. 19. What is the level of loudness measured in the International System of Units? A) Bel (B). B) Decibel (dB). C) Volt (V). D) Hertz (Hz). Show Answer Correct Answer: A) Bel (B). 20. Electromagnetic waves with the highest frequency and greatest amount of energy are ..... A) Radio waves. B) Ultraviolet waves. C) Microwaves. D) Gamma rays. Show Answer Correct Answer: D) Gamma rays. 21. The wavelength of the visible spectrum is: A) 8000-4000A. B) 4000-6000A. C) 4000-100A. D) None of the above. Show Answer Correct Answer: A) 8000-4000A. 22. Is the following sentence true or false? All electromagnetic waves travel at the same speed through a medium. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: B) False. 23. Which color has the highest frequency? A) Blue. B) Green. C) Yellow. D) Red. Show Answer Correct Answer: A) Blue. 24. Mobile phone network.Cooking. Mobile phone framework.Communication between electronic device:Wifi, Bluetooth.These are the application of: A) Microwave. B) Visible light. C) X-ray. D) Gamma ray. Show Answer Correct Answer: A) Microwave. 25. A longitudinal wave is also known as a ..... A) Compressional. B) Constitutional. C) Confessional. D) Conditional. Show Answer Correct Answer: A) Compressional. 26. What type of wave has the largest wavelength and the lowest frequency on the electromagnetic spectrum? A) Micro. B) Gamma. C) X ray. D) Radio. Show Answer Correct Answer: D) Radio. 27. Energy can be transferred from one medium to another through ..... A) Vibrations. B) Stacking objects. C) Colors. D) An ordered sequence. Show Answer Correct Answer: A) Vibrations. 28. How much of the electromagnetic spectrum is visible? A) All of it. B) None of it. C) Most of it. D) Only a small part. Show Answer Correct Answer: D) Only a small part. 29. A student is measuring the distance between the crest and the rest position of both a mechanical wave in a spring and an electromagnetic wave emitted by a radio antenna. Which question is the student trying to answer? A) What is the speed of the waves?. B) What is the frequency of the waves?. C) What is the amplitude of the waves?. D) What is the wavelength of the waves?. Show Answer Correct Answer: C) What is the amplitude of the waves?. 30. Which of the following are not a part of the Electromagnetic Spectrum? A) Radio waves. B) Magnetic waves. C) X-rays. D) Gamma Rays. Show Answer Correct Answer: B) Magnetic waves. 31. Constellations are important reference points for locating A) Planets. B) Comets. C) Stars. D) All of the above. Show Answer Correct Answer: D) All of the above. 32. The wave speed equation is v = frequency x wavelength. If the frequency of a wave is 500Hz and the wavelength is 2m, how fast is the wave moving? A) 10, 000 m/s. B) 250 m/s. C) 25 m/s. D) 1000 m/s. Show Answer Correct Answer: D) 1000 m/s. 33. What is bending of a light wave is called? A) Reflection. B) Refraction. C) Echo. D) None of the above. Show Answer Correct Answer: B) Refraction. 34. This wave has the second highest frequency on the spectrum. A) Visible light. B) X-rays. C) Microwaves. D) Gamma rays. Show Answer Correct Answer: B) X-rays. 35. To refract means A) To bounce off of. B) To bend. C) All the above. D) None of the above. Show Answer Correct Answer: B) To bend. 36. When the wavelength increases the frequency will A) Increase. B) Decrease. C) Remain same. D) None of these. Show Answer Correct Answer: B) Decrease. 37. Ultraviolet sterilization is effective because UV light: A) Can be seen by the naked eye, ensuring areas are covered. B) Uses low energy waves that are safe for human exposure. C) Has short wavelengths that can break molecular bonds in DNA. D) Heats objects to high temperatures, killing bacteria. Show Answer Correct Answer: C) Has short wavelengths that can break molecular bonds in DNA. 38. Waves that do NOT require a medium to travel A) Transverse Wave. B) Surface Wave. C) Mechanical Wave. D) Longitudinal Wave. E) Electromagnetic Wave. Show Answer Correct Answer: E) Electromagnetic Wave. 39. What happens to the frequency of an electromagnetic wave if its wavelength is doubled, assuming the speed of light remains constant? A) The frequency remains the same. B) The frequency quadruples. C) The frequency doubles. D) The frequency is halved. Show Answer Correct Answer: D) The frequency is halved. 40. What electromagnetic wave that can induce cancer and genetic defects? A) Ultraviolet rays. B) Infrared. C) Microwave. D) Gamma rays. Show Answer Correct Answer: D) Gamma rays. 41. The following give off ionizing radiation:* radioactive material * very high-voltage equipment * nuclear reactions * stars A) Stars. B) Very high-voltage equipment. C) Nuclear reactions. D) Radioactive material. Show Answer Correct Answer: D) Radioactive material. 42. As a thunderstorm approaches, you see the lightning before you hear the thunder, because light travels ..... than sound. A) At the same speed. B) Slower. C) In a different medium. D) Faster. Show Answer Correct Answer: D) Faster. 43. Medium and high frequency waves of ..... are used for broadcasting by local radio stations. A) Infrared rays. B) Radio waves. C) Gamma rays. D) X-rays. Show Answer Correct Answer: B) Radio waves. 44. Electromagnetic waves can transfer energy through a vacuum. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 45. True or False:Sound waves can travel where there is no matter. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: B) False. 46. What is the primary use of infrared waves in everyday technology? A) Medical imaging. B) Radio broadcasting. C) Remote controls. D) Cooking food. Show Answer Correct Answer: C) Remote controls. 47. True or False:Every object gives off electromagnetic waves. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 48. Sunlight is composed of energy that is visible to humans and energy that is not visible to humans. Which statement describes how the visible energy from the Sun is different from the non visible energy? A) It has different amplitudes. B) It travels a different distance. C) It travels at a different speed. D) It has different wavelengths. Show Answer Correct Answer: D) It has different wavelengths. 49. Frequency = 1.05x10$^{15}$ HzEnergy =? A) 6.31E-49. B) 3.15E+23. C) 6.96E-19. D) 1.58E+48. Show Answer Correct Answer: C) 6.96E-19. 50. Which of the following best describes microwaves? A) Used in tanning beds. B) Used to broadcast television signals. C) Widely used in the cooking industry. D) Used by medical professionals to "see" inside the body. Show Answer Correct Answer: C) Widely used in the cooking industry. 51. This is how we perceive the frequency (wavelength) of EM waves (light). (Vocab) A) Color. B) Brightness. C) Smell. D) Pitch. E) Volume. Show Answer Correct Answer: A) Color. 52. How do antennas utilize electromagnetic waves for communication? A) Antenna relies on physical cables to transmit data between devices. B) Antenna uses sound waves to communicate over long distances. C) Antenna converts light signals into electrical energy for communication. D) Antenna utilizes electromagnetic waves to transmit and receive information by converting electrical signals into waves and vice versa. Show Answer Correct Answer: D) Antenna utilizes electromagnetic waves to transmit and receive information by converting electrical signals into waves and vice versa. 53. Which of the following does sound travel the fastest? A) Plasma. B) Gas. C) Liquid. D) Solid. Show Answer Correct Answer: D) Solid. 54. The production of light with a specific pattern of oscillation. A) Reflection. B) Diffraction. C) Refraction. D) Polarization. Show Answer Correct Answer: D) Polarization. 55. Light waves normally travel in a A) Curved lines. B) Group of waves. C) Straight line. D) None of the above. Show Answer Correct Answer: C) Straight line. 56. Visible light waves with the longest wavelengths appear red in color A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 57. What is a common everyday application for infrared waves? A) Using a TV remote control. B) Killing cancer cells. C) Looking for clues at a crime scene. D) Killing microorganisms. Show Answer Correct Answer: A) Using a TV remote control. 58. Electromagnetic waves that help your body produce vitamin D are called? A) Ultraviolet rays. B) X-rays. C) Gamma rays. D) None of the above. Show Answer Correct Answer: A) Ultraviolet rays. 59. What type of electromagnetic waves have the shortest wavelengths? A) Infrared rays. B) Gamma rays. C) Radio waves. D) X-rays. Show Answer Correct Answer: B) Gamma rays. 60. Which part of the electromagnetic spectrum is visible to the human eye? A) Visible light. B) Ultraviolet. C) X-rays. D) Infrared. Show Answer Correct Answer: A) Visible light. ← 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