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 4 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 12 Physics (Part I) Chapter 8 Electromagnetic Waves Quiz 4 (60 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. An antenna of a radio detects ..... A) Sound waves. B) Ocean waves. C) Mountain waves. D) Radio waves. Show Answer Correct Answer: D) Radio waves. 2. What is the phenomenon called when light bends as it passes through a different medium? A) Absorption. B) Reflection. C) Refraction. D) Diffraction. Show Answer Correct Answer: C) Refraction. 3. Electromagnetic waves are made of ..... and magnetic field that oscilllate ..... to one another. A) Electric field, parallel. B) Mechanical field, perpendicularly. C) Electric field, perpendicularly. D) None of the above. Show Answer Correct Answer: C) Electric field, perpendicularly. 4. Which types of waves can travel through a vacuum? A) Seismic. B) Sound. C) Light. D) Mechanical. Show Answer Correct Answer: C) Light. 5. Things that look ..... absorb all the visible light shining on them. A) Blue. B) White. C) Green. D) Black. Show Answer Correct Answer: D) Black. 6. Which of the following occurs as a light wave bends when it passes from one medium into another? A) Constructive interference. B) Reflection. C) Refraction. D) Destructive interference. Show Answer Correct Answer: C) Refraction. 7. Name the electromagnetic wave that causes fluorescence. A) Visible Light. B) X-rays. C) Gamma Rays. D) Ultraviolet Rays. Show Answer Correct Answer: D) Ultraviolet Rays. 8. What do we call the part of a compressional wave that is spread a part? A) Compression. B) Crest. C) Trough. D) Rarefaction. Show Answer Correct Answer: D) Rarefaction. 9. Visible light is the only EM wave that can be seen by our naked eye. What is the color of light if it has a frequency of 4.5 x1014 Hz? A) Blue. B) Red. C) Yellow. D) Green. Show Answer Correct Answer: B) Red. 10. Electromagnetic radiation behaves sometimes like a(n) ..... and sometimes like a(n) ..... A) Wave, stream of particles. B) Solid, liquid. C) Gas, plasma. D) None of the above. Show Answer Correct Answer: A) Wave, stream of particles. 11. Electromagnetic waves are produced by: A) Static charge. B) Charge less particle. C) Accelerating charge. D) None of these. Show Answer Correct Answer: C) Accelerating charge. 12. A wave with short wavelengths has a ..... frequency A) Low. B) Medium. C) High. D) None of the above. Show Answer Correct Answer: C) High. 13. Elijah, Maya, and Daniel are discussing electromagnetic waves. They are trying to figure out which type of electromagnetic wave has wavelengths shorter than visible light but longer than X-rays. Can you help them? A) Gamma rays. B) X-rays. C) Infrared rays. D) Ultraviolet rays. Show Answer Correct Answer: D) Ultraviolet rays. 14. Which of the following waves require a medium to propagate ..... A) Acoustic Waves. B) Electromagnetic Waves. C) Both require medium. D) None of the above. Show Answer Correct Answer: A) Acoustic Waves. 15. RADAR is the acronym for radio detection and reactions. A) TRUE. B) FALSE. C) All the above. D) None of the above. Show Answer Correct Answer: B) FALSE. 16. A wave transmits ..... A) Energy. B) Gravity. C) Germs. D) None of the above. Show Answer Correct Answer: A) Energy. 17. Radio waves are carried from an antenna to your car radio. This is an example of ..... A) Absorption. B) Reflection. C) Refraction. D) Transmission. Show Answer Correct Answer: D) Transmission. 18. Which is true of a mechanical wave? A) It must have a medium. B) It must travel in empty space. C) It can travel in a vacuum. D) Both sound and light are examples. Show Answer Correct Answer: A) It must have a medium. 19. How would a wave in a wave machine change going from skewers with spice drops to bare skewers? A) Not change. B) Speed up. C) Slow down. D) It's a guessing game really. Show Answer Correct Answer: B) Speed up. 20. Cellular phones utilize ..... A) Microwaves. B) Radar waves. C) Very high frequency waves. D) Very low frequency waves. Show Answer Correct Answer: A) Microwaves. 21. EM waves carry both energy and momentum, which can be delivered to a surface. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 22. FM radio waves can travel great distances because they bounce off the atmosphere. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: B) False. 23. Microwaves are used in which of the following applications for detecting objects and their speed? A) X-rays. B) Seismology. C) Radar. D) Ultrasound. Show Answer Correct Answer: C) Radar. 24. Which electromagnetic wave is invisible to our eye? A) Ultraviolet. B) Violet. C) Red. D) Green. Show Answer Correct Answer: A) Ultraviolet. 25. Which of the following statements correctly describes the relationship between frequency and wavelength in the electromagnetic spectrum? A) As frequency increases, wavelength decreases. B) As frequency decreases, wavelength decreases. C) Frequency and wavelength are independent of each other. D) As frequency increases, wavelength increases. Show Answer Correct Answer: A) As frequency increases, wavelength decreases. 26. Large frequency = A) Small energy. B) Large energy. C) All the above. D) None of the above. Show Answer Correct Answer: B) Large energy. 27. To verify the hypothesis that coil wire thickness affects output voltage, what would be the best approach? A) Increase the number of coils only. B) Use a weaker magnet with the same coil. C) Add more magnets without changing the coil. D) Change the coil thickness and measure output. Show Answer Correct Answer: D) Change the coil thickness and measure output. 28. Electromagnetic wave with a wavelength between about 1mm and 700 billionths of a meter A) Radio wave. B) Ultraviolet wave. C) Infrared wave. D) Microwave. Show Answer Correct Answer: C) Infrared wave. 29. What are materials that let's all light through? A) Transparent. B) Translucent. C) Opaque. D) None of the above. Show Answer Correct Answer: A) Transparent. 30. What are the uses of X-rays according to the learning material? A) Cooking and baking. B) Medical imaging and airport security. C) Communication and broadcasting. D) Water purification and waste management. Show Answer Correct Answer: B) Medical imaging and airport security. 31. What is the wavelength range for the FM radio band (88 MHz-108 MHz)?c= 3.00 x 10$^{8}$ m/s. $\lambda=\frac{c}{f}$ A) 5.0 m / 4.6 m. B) 5.4 m/ 7.78 m. C) 3.4 m/2.78 m. D) 4.3 m / 3 m. Show Answer Correct Answer: C) 3.4 m/2.78 m. 32. The frequency of waves is measured in A) Hertz. B) Meters. C) Kilograms. D) Inches. Show Answer Correct Answer: A) Hertz. 33. Which is true about electromagnetic waves? A) All travel at the same speed. B) All have the same frequency. C) All have the same wavelength. D) All transport energy but not momentum. Show Answer Correct Answer: A) All travel at the same speed. 34. X-rays carry more energy than visible light. Compare the frequencies and wavelengths of these two types of EM radiation. Visible light has- A) Higher frequencies and shorter wavelengths than X-rays. B) Lower frequencies and shorter wavelengths than X-rays. C) Higher frequencies and longer wavelengths than X-rays. D) Lower frequencies and longer wavelengths than X-rays. Show Answer Correct Answer: D) Lower frequencies and longer wavelengths than X-rays. 35. Which of the following properties of electromagnetic waves determines their color in the visible spectrum? A) Speed. B) Frequency. C) Amplitude. D) Wavelength. Show Answer Correct Answer: D) Wavelength. 36. When light (or other electromagnetic radiation) travels across a given region, which of the followingis/are oscillating?I. Electric fieldII. Magnetic fieldIII. Energy A) I only. B) II only. C) III only. D) I and II only. E) I, II and III. Show Answer Correct Answer: D) I and II only. 37. Which of the following oscillating quantities made up an electromagnetic wave? A) Electric and magnetic fields. B) Magnetic fields only. C) Electric fields only. D) Electrons only. Show Answer Correct Answer: A) Electric and magnetic fields. 38. Gamma rays can be used A) In tanning beds. B) In solar panels. C) To treat cancer. D) In tv remote controls. Show Answer Correct Answer: C) To treat cancer. 39. Which of the following is a spiral galaxy? A) Milky Way. B) Large Magellanic Cloud. C) Messier 87. D) Small Magellanic Cloud. Show Answer Correct Answer: A) Milky Way. 40. Microwaves have longer wavelengths than radio waves A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: B) False. 41. What is the speed of EM waves? A) 3 km/s. B) 300, 000 km/s. C) 300, 000 km/h. D) 300 km/s. Show Answer Correct Answer: B) 300, 000 km/s. 42. It has the lowest frequency and it used to transmit sound and pictures in a radio or television. A) Radio wave. B) Visible light. C) X-rays. D) Gamma Rays. Show Answer Correct Answer: A) Radio wave. 43. Which type of waves must have a medium in order to travel? A) Electromagnetic wave. B) Mechanical wave. C) All the above. D) None of the above. Show Answer Correct Answer: B) Mechanical wave. 44. Which electromagnetic wave is most suitable for taking images of bones while minimizing exposure time risks? A) Visible light from rainbow colors. B) Ultraviolet used for vitamin D. C) Gamma rays from nuclear reactions. D) X-rays that penetrate soft tissue. Show Answer Correct Answer: D) X-rays that penetrate soft tissue. 45. True or False:Mechanical waves can travel in space. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: B) False. 46. What determines the height of the oscillation? A) Frequency. B) Timbre. C) Volume. D) Oscaillation frequency. Show Answer Correct Answer: D) Oscaillation frequency. 47. I know and can label the following:amplitude, frequency, crest, trough, and equilibrium point on the chart in my review. A) Yes. B) Not yet. C) All the above. D) None of the above. Show Answer Correct Answer: A) Yes. 48. Which electromagnetic waves are commonly used in remote controls for televisions? A) Radio waves. B) X-rays. C) Infrared rays. D) Ultraviolet rays. Show Answer Correct Answer: C) Infrared rays. 49. True or False:Red has the HIGHEST Frequency A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: B) False. 50. If an object appears green it must ..... A) Reflect green light. B) Transmit blue light. C) Absorb green light. D) Reflect yellow and orange light. Show Answer Correct Answer: A) Reflect green light. 51. What type of waves are electromagnetic waves? A) Transverse. B) Magnetical. C) Optical. D) Longitudinal. Show Answer Correct Answer: A) Transverse. 52. What type of EM wave is used in checking the authenticity of bank notes? A) X-ray. B) Ultraviolet. C) Infrared. D) Microwave. Show Answer Correct Answer: B) Ultraviolet. 53. As frequency increases, wavelength becomes ..... A) Smaller. B) Higher. C) Wider. D) Longer. Show Answer Correct Answer: A) Smaller. 54. Only some light waves pass through a polarizing filter. A) False. B) True. C) All the above. D) None of the above. Show Answer Correct Answer: B) True. 55. Which of the following has the highest frequency? A) Ultraviolet rays. B) Radiowaves. C) Gamma rays. D) Microwaves. Show Answer Correct Answer: C) Gamma rays. 56. Wavelength = 3.00x10$^{-8}$ mFrequency = ..... What is the *Energy* =? A) 1.51x10$^{49}$. B) 9.99x10$^{15}$. C) 1.00x10$^{-16}$. D) 6.62x10$^{-18}$. Show Answer Correct Answer: D) 6.62x10$^{-18}$. 57. GPS stands for ..... system. A) Global placement. B) Global positioning. C) Gamma positioning. D) None of the above. Show Answer Correct Answer: B) Global positioning. 58. Which of the following electromagnetic waves has the shortest wavelength? A) Infrared waves. B) X-rays. C) Microwaves. D) Radio waves. Show Answer Correct Answer: B) X-rays. 59. Radio waves carry information from a broadcasting station to your radio or television. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 60. Electromagnetic waves can travel through a vacuum. What is the speed of an electromagnetic wave in a vacuum? A) 3 x 109 m/s. B) 3 x 108 m/s$^{2}$. C) 3 x 108 m/s. D) 3 x 109 m/s$^{2}$. Show Answer Correct Answer: C) 3 x 108 m/s. ← 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 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