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 2 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 12 Physics (Part I) Chapter 8 Electromagnetic Waves Quiz 2 (60 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. What happens to the energy of an electromagnetic wave as its frequency increases? A) It increases. B) It decreases. C) It stays the same. D) None of the above. Show Answer Correct Answer: A) It increases. 2. Which is an example of a radio wave A) Heat lamp. B) Television. C) Vision. D) Sun light. Show Answer Correct Answer: B) Television. 3. Aiden, Daniel, and Hannah are on a space mission. They need to transfer electric and magnetic energy through the vacuum of space. Which type of wave should they use? A) Electromagnetic waves. B) Radio waves. C) Microwaves. D) Visible light. Show Answer Correct Answer: A) Electromagnetic waves. 4. What is the correct speed of light in a vacuum? A) $3.00\times10^8$. B) $3.00 \times 10^8$. C) $3.00\times10^8$. D) $3.00\times10^8$. Show Answer Correct Answer: B) $3.00 \times 10^8$. 5. Which is NOT a name for a part of the electromagnetic spectrum? A) Sound waves. B) Radio waves. C) Visible light. D) X-rays. Show Answer Correct Answer: A) Sound waves. 6. A plane mirror gives you a A) Inverted image. B) Magnified image. C) Real image. D) Virtual image. Show Answer Correct Answer: D) Virtual image. 7. Which of the following is NOT a use of radio waves? A) Heart rate monitors. B) TV broadcasting. C) Cooking food. D) Cell phone communication. Show Answer Correct Answer: C) Cooking food. 8. Which electromagnetic wave is used in wireless communication technologies like Wi-Fi and cell phones? A) Radio waves. B) X-rays. C) Gamma rays. D) Infrared rays. Show Answer Correct Answer: A) Radio waves. 9. What kind of electromagnetic radiation has the longest wavelength? A) Gamma rays. B) Radio waves. C) Infrared rays. D) Ultraviolet rays. Show Answer Correct Answer: B) Radio waves. 10. Which electromagnetic wave is used in sterilizing medical equipment? A) Infrared wave. B) Radio wave. C) Ultraviolet wave. D) Microwave. Show Answer Correct Answer: C) Ultraviolet wave. 11. Whenever electromagnetic radiation travels in space, it has: A) No vector. It is carried by its own photon energy. B) Two vectors-one electric and one magnetic, placed perpendicular to each other. C) Two vectors-one electric and one magnetic, placed parallel to each other. D) One vector-quarks, which are subatomic particles that make up photons. Show Answer Correct Answer: B) Two vectors-one electric and one magnetic, placed perpendicular to each other. 12. Which of the following is a real-world application of electromagnetic waves? A) Rusting of iron. B) Transmission of radio signals. C) Photosynthesis in plants. D) Boiling water. Show Answer Correct Answer: B) Transmission of radio signals. 13. Which electromagnetic waves allow us to diagnose & treat cancer? A) Gamma rays. B) X-rays. C) Ultraviolet rays. D) Infrared. Show Answer Correct Answer: A) Gamma rays. 14. The full range of electromagnetic waves is called the ..... A) Electromagnetic spectrum. B) Electromagnetic field. C) Electromagnetic range. D) Electromagnetic band. Show Answer Correct Answer: A) Electromagnetic spectrum. 15. Which wavelengths of the EM spectrum are dangerous to life? A) Radio, micro and gamma. B) Gamma, infrared, and UV. C) Infrared, UV and X Rays. D) UV, X rays and Gamma. Show Answer Correct Answer: D) UV, X rays and Gamma. 16. What is the energy called that electromagnetic waves transfer through matter and/or space? A) Polarized light. B) Electromagnetic radiation. C) Lightening. D) None of the above. Show Answer Correct Answer: B) Electromagnetic radiation. 17. Which of these waves can travel through empty space (a vacuum)? A) Water. B) Light. C) Sound. D) None of the above. Show Answer Correct Answer: B) Light. 18. What is one of the uses of gamma rays in the medical field? A) Preserving food. B) Improving vision. C) Enhancing physical strength. D) Sterilizing medical equipment. Show Answer Correct Answer: D) Sterilizing medical equipment. 19. What is the approximate wavelength range of visible light? A) 10 nm to 100 nm. B) 1 mm to 10 mm. C) 400 nm to 700 nm. D) 1 m to 10 m. Show Answer Correct Answer: C) 400 nm to 700 nm. 20. Most energetic wavelength of light A) Microwave. B) Infrared. C) Radio. D) Gamma. Show Answer Correct Answer: D) Gamma. 21. These materials transmit most of the light that pass through them. A) Translucent. B) Reflective. C) Opaque. D) Transparent. Show Answer Correct Answer: D) Transparent. 22. Which type of EM waves is the most energetic? A) Ultraviolet rays. B) Microwaves. C) Gamma rays. D) X-rays. Show Answer Correct Answer: C) Gamma rays. 23. A wave has a wavelength of 1 m and a speed of 200 m/s. What is the frequency of the wave? A) 200 m/s. B) 200 Hz. C) 20 m/s. D) 20 Hz. Show Answer Correct Answer: B) 200 Hz. 24. High energy radiation from the Sun can cause damage to the cells of organisms. Which is not a type of high energy radiation? A) Microwave radiation. B) X-ray. C) Ultraviolet radiation. D) Gamma radiation. Show Answer Correct Answer: A) Microwave radiation. 25. Electromagnetic wave with a wavelength between about 0.1 mm and 30 cm A) Infrared wave. B) Ultraviolet wave. C) Microwave. D) Visible light. Show Answer Correct Answer: C) Microwave. 26. A ..... is a high-energy electromagnetic wave with a shorter wavelength and higher frequency than all other types of electromagnetic waves. A) Ultraviolet waves. B) Radio waves. C) Gamma rays. D) Infrared waves. Show Answer Correct Answer: C) Gamma rays. 27. Through what kind of matter does light move fastest? A) Matter that is in larger objects. B) Air. C) Liquids. D) Matter that is lighter in color. Show Answer Correct Answer: B) Air. 28. True or False:All electromagnetic waves travel at the same speed-the speed of light. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 29. Which color has the longest wavelength and shortest frequency? A) Yellow. B) Red. C) Blue. D) Violet. Show Answer Correct Answer: B) Red. 30. A campfire emits- A) Carbon Dioxide. B) Gamma waves. C) Light waves. D) Infrared Waves. E) Ultraviolet waves. Show Answer Correct Answer: D) Infrared Waves. 31. In the visible spectrum, which color has the shortest wavelength? A) Green. B) Blue. C) Red. D) Violet. Show Answer Correct Answer: D) Violet. 32. The speed of light in a vacuum is approximately ..... meters per second. A) 100, 000, 000. B) 1, 000, 000, 000. C) 299, 792, 458. D) 500, 000, 000. Show Answer Correct Answer: C) 299, 792, 458. 33. Which color absorbs the most radiation of the options below? A) Black. B) White. C) Yellow. D) None of the above. Show Answer Correct Answer: A) Black. 34. True or False:Only warm objects emit (give off) radiation. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: B) False. 35. Which of the following theories can explain the bending of light as it passes through a new medium? A) Wave theory of light. B) Classical mechanics. C) Particle theory of light. D) Kinetic theory. Show Answer Correct Answer: A) Wave theory of light. 36. Cellular telephones utilize A) Very high frequency waves. B) Microwaves. C) Radar waves. D) Very low frequency waves. Show Answer Correct Answer: B) Microwaves. 37. What happens to the speed of electromagnetic waves as they move from a vacuum into a medium like glass? A) It decreases. B) It increases. C) It remains the same. D) It becomes zero. Show Answer Correct Answer: A) It decreases. 38. Visible light has how many different frequencies and wavelengths? A) 8. B) 6. C) 5. D) 7. Show Answer Correct Answer: B) 6. 39. Which of the following are in the correct order from shortest to longest wavelength? A) Gamma, Visible, Radio. B) Gamma, Radio, Visible. C) Visible, Radio, Gamma. D) Radio, Visible, Gamma. Show Answer Correct Answer: A) Gamma, Visible, Radio. 40. Which of these lists the EM waves from Highest to lowest frequency? A) Radio-Micro-Gamma-Visible light-UV-Xrays-Infrared-Xrays. B) Radio-Micro-Infrared-Visible light-UV-X-Gamma waves. C) Gamma-Xray-UV-Visible light-Infrared-Micro-radio. D) None of the above. Show Answer Correct Answer: C) Gamma-Xray-UV-Visible light-Infrared-Micro-radio. 41. Compared to radio waves, how are microwaves in terms of wavelength? A) The same length. B) Longer. C) Shorter. D) Variable. Show Answer Correct Answer: C) Shorter. 42. EM waves travel at the speed of light. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 43. Select the correct order on the Electromagnetic Spectrum from shortest wavelengths to longest wavelengths A) R, M, I, V, U, X, G. B) G, X, U, V, I, M, R. C) V, M, I, U, X, G, R. D) None of the above. Show Answer Correct Answer: B) G, X, U, V, I, M, R. 44. Waves transfer which of the following from one place to another? A) Energy, but not matter. B) Both matter & energy. C) Matter, but not energy. D) Light, but not sound. Show Answer Correct Answer: A) Energy, but not matter. 45. What do all waves have in common? A) They transfer energy from one place to another. B) They transfer matter from one place to another. C) They all travel at the same speed. D) They all travel in a medium or substance. Show Answer Correct Answer: A) They transfer energy from one place to another. 46. If the frequency of an electromagnetic wave is increased, what happens to its wavelength? A) The wavelength remains the same. B) The wavelength becomes infinite. C) The wavelength increases. D) The wavelength decreases. Show Answer Correct Answer: D) The wavelength decreases. 47. Which of the following are in correct order from greatest to least energy? A) X-rays, ultraviolet, infrared, microwaves. B) Infrared, ultraviolet, x-rays, microwaves. C) Microwaves, infrared, ultraviolet, x-rays. D) Microwaves, x-rays, infrared, ultraviolet. Show Answer Correct Answer: A) X-rays, ultraviolet, infrared, microwaves. 48. The primary pigment colors are A) Red, Blue, Yellow. B) The same as complementary colors. C) Red, Green, Blue. D) Cyan, Yellow, Magenta. Show Answer Correct Answer: D) Cyan, Yellow, Magenta. 49. Which electromagnetic waves are used in ovens? A) Infrared rays. B) Ultraviolet rays. C) Microwaves. D) None of the above. Show Answer Correct Answer: C) Microwaves. 50. Maxwell hypothesized that a changing electric field would produce a magnetic field. and edited which equation: A) Ampere's Law. B) Gauss's Law. C) Magnetic flux through a closed loop formula. D) Faraday's Law. Show Answer Correct Answer: A) Ampere's Law. 51. Electromagnetic waves do not require any medium for propagation. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 52. What is the relationship between wavelength and frequency in waves? A) They are directly related; as wavelength increases, frequency increases. B) They are inversely related; as wavelength increases, frequency decreases. C) They are unrelated; changes in wavelength do not affect frequency. D) They are proportionally related; as wavelength increases, frequency remains constant. Show Answer Correct Answer: B) They are inversely related; as wavelength increases, frequency decreases. 53. How does wavelength change as frequency increases across the EM spectrum? A) The wavelength increases. B) The wavelength first increases and then decrease. C) The wavelength first decreases and then increases. D) The wavelength decreases. Show Answer Correct Answer: D) The wavelength decreases. 54. Frequency = number of wavelengths that pass a given point in 1 km. A) False. B) True. C) Both. D) None of the above. Show Answer Correct Answer: A) False. 55. Electromagnetic waves with the longest wavelengths are A) X-rays. B) Gamma rays. C) Infrared waves. D) Radio waves. Show Answer Correct Answer: D) Radio waves. 56. How are electromagnetic waves produced? A) Any disturbance. B) Vibrating Charge. C) Currents. D) Voltage source. Show Answer Correct Answer: B) Vibrating Charge. 57. The visible light spectrum ranges between A) Radar waves and X-rays. B) Television waves and infrared rays. C) Infrared rays and ultraviolet rays. D) Ultraviolet rays and gamma rays. Show Answer Correct Answer: C) Infrared rays and ultraviolet rays. 58. A ..... is the lighter, outer part of a shadow cone. A) Penumbra. B) Umbra. C) All the above. D) None of the above. Show Answer Correct Answer: A) Penumbra. 59. Which among the following has the maximum penetrating power? A) Radio waves. B) Gamma rays. C) Microwaves. D) Ultraviolet radiation. Show Answer Correct Answer: B) Gamma rays. 60. Based on Maxwell starting points:*Magnetic field lines: A) Always form closed loops-they do not begin or end anywhere. B) They can form closed or open loops-they begin at specific point but end anywhere. C) Originate on south poles and terminate on north poles. D) Magnetis can be found as separate poles. Show Answer Correct Answer: A) Always form closed loops-they do not begin or end anywhere. ← 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 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 9 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books