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 8 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 12 Physics (Part I) Chapter 8 Electromagnetic Waves Quiz 8 (60 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Thomas Young (1801) showed that A) Light is a wave trough experiment on interference of light. B) Light is an electromagnetic. C) Light is a particle. D) None of the above. Show Answer Correct Answer: A) Light is a wave trough experiment on interference of light. 2. EM waves also all travel at relatively the same speed when they travel through a vacuum. That speed is commonly referred to as the ..... , which measures ..... A) Speed of sound; wavelength. B) Speed of sound; frequency. C) Speed of light; wavelength. D) Speed of light; frequency. Show Answer Correct Answer: D) Speed of light; frequency. 3. Electromagnetic waves A) Need a medium to travel through. B) Can travel through a vacuum. C) All the above. D) None of the above. Show Answer Correct Answer: B) Can travel through a vacuum. 4. What type of electromagnetic waves is used in the airport to check on the luggage? A) X-ray. B) Radio wave. C) Infrared ray. D) Gamma ray. Show Answer Correct Answer: A) X-ray. 5. When an electron returns to ground state from an excited state, the atom will A) Emit energy. B) Absorb energy. C) Rotate. D) Wiggle. Show Answer Correct Answer: A) Emit energy. 6. *Maxwell calculated the speed of light to be A) Fluctuating based on the temprature. B) $3x10^4m/s.$. C) Speed of sound. D) $3x10^8m/s.$. Show Answer Correct Answer: D) $3x10^8m/s.$. 7. A gamma ray photon and a microwave photon are traveling in a vacuum. Compared to the wavelength and energy of the gamma ray photon, the microwave photon has a ..... ? A) Shorter wavelength and less energy. B) Shorter wavelength and more energy. C) Longer wavelength and less energy. D) Longer wavelength and more energy. Show Answer Correct Answer: C) Longer wavelength and less energy. 8. Which of the following statements about electromagnetic waves is INCORRECT? A) They are all transverse waves. B) They all travel at 300 m/s through space. C) They are the only types of wave that can travel through space. D) They all transfer energy without transferring matter. Show Answer Correct Answer: B) They all travel at 300 m/s through space. 9. Electromagnetic waves that you can see A) Radio waves. B) X-rays. C) Visible light. D) Ultraviolet rays. Show Answer Correct Answer: C) Visible light. 10. A method of broadcasting signal by changing amplitude of a wave is A) Magnetic electro. B) Frequency modulation. C) Amplitude modulation. D) Electric magnitude. Show Answer Correct Answer: C) Amplitude modulation. 11. The entire electromagnetic spectrum is divided into regions by A) Speed. B) Color. C) The way they are used. D) Wavelength. Show Answer Correct Answer: D) Wavelength. 12. Which type of waves can travel in space? A) Electromagnetic. B) Mechanical. C) All the above. D) None of the above. Show Answer Correct Answer: A) Electromagnetic. 13. What is the part of a longitudinal wave where particles are spread apart? A) Wavelength. B) Compression. C) Amplitude. D) Rarefaction. Show Answer Correct Answer: D) Rarefaction. 14. Which type of electromagnetic wave is used in tanning beds? A) Infrared waves. B) Ultraviolet waves. C) Gamma rays. D) X-rays. Show Answer Correct Answer: B) Ultraviolet waves. 15. When scientists talk about white light, they areMOST likely referring to light that is A) A combination of all of the colors in the visible region of the electromagnetic spectrum. B) The unabsorbed refracted light produced by a black light. C) The narrow band corresponding to white light in the electromagnetic spectrum. D) A combination of all the types of electromagnetic radiation. Show Answer Correct Answer: A) A combination of all of the colors in the visible region of the electromagnetic spectrum. 16. In the electromagnetic spectrum, which wave has a shorter wavelength than visible light but longer than X-rays? A) Microwaves. B) Ultraviolet. C) Gamma rays. D) Infrared. Show Answer Correct Answer: B) Ultraviolet. 17. Sound waves is an example of mechanical waves. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 18. Which type of wave is used in light to see bloodstains in crime scenes? A) X-ray. B) Blue visible light. C) Ultraviolet radiation. D) Infrared radiation. Show Answer Correct Answer: C) Ultraviolet radiation. 19. Electromagnetic waves are not deflected by electric or magnetic fields. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: B) False. 20. Why is a large convex mirror used in convenience stores? A) It produces larger image. B) It produces clearer image. C) It forms virtual image. D) It reflects wider area. Show Answer Correct Answer: D) It reflects wider area. 21. A microwave oven emits radiation at a wavelength of 0.005 m. What is the frequency of this radiation? A) 6.00 x 10$^{10}$ Hz. B) 1.50 x 10$^{6}$ Hz. C) 2.00 Hz. D) 6.67 x 10$^{-7}$ Hz. Show Answer Correct Answer: A) 6.00 x 10$^{10}$ Hz. 22. Which electromagnetic waves have the highest energy? A) Light waves. B) X-rays. C) Radio waves. D) Gamma rays. Show Answer Correct Answer: D) Gamma rays. 23. The number of waves that pass by in a second is known as the wave's ..... A) Wavelength. B) Amplitude. C) Speed. D) Frequency. Show Answer Correct Answer: D) Frequency. 24. What type of waves are used on a TV remote control? A) Visible light. B) Ultraviolet. C) Radio waves. D) Infrared rays. Show Answer Correct Answer: D) Infrared rays. 25. What is the frequency of a photon whose energy is 3.4x10$^{-19}$J? A) 5.1x10$^{14}$ Hz. B) 8.8x10$^{26}$ Hz. C) 1.9x10$^{-15}$ Hz. D) 2.3x10$^{-52}$ Hz. Show Answer Correct Answer: A) 5.1x10$^{14}$ Hz. 26. Which electromagnetic wave is produced by the process within the atom and can be used to see through the skin and to the bones? A) Gamma rays. B) Ultraviolet radiation. C) Infrared radiation. D) X-rays. Show Answer Correct Answer: D) X-rays. 27. Which electromagnetic wave is usually given off by sources at high temperature? A) Visible light. B) Radio waves. C) Ultraviolet radiation. D) Infrared waves. Show Answer Correct Answer: A) Visible light. 28. If a light wave travels through the glass on the fish tank then into the water, what happens to the light wave? A) It bends when it enters a different medium. B) It will not be able to travel through the water. C) All of the light will bounce back from the glass. D) None of the above. Show Answer Correct Answer: A) It bends when it enters a different medium. 29. How much of the electromagnetic spectrum is made up of visible light? A) Only a small portion. B) Most of the spectrum. C) About half. D) None of the above. Show Answer Correct Answer: A) Only a small portion. 30. True or False:All electromagnetic waves are transverse. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 31. In order to see an object, light must be A) Transmitted into your skin. B) Reflected off the object and into your eyes. C) Reflected off the object then off the ground then into your eyes. D) Absorbed by your genetic material. Show Answer Correct Answer: B) Reflected off the object and into your eyes. 32. Which of the following is true for sound waves? A) They require a medium. B) They are unrelated to vibrations. C) They can travel in a vacuum. D) They cannot travel through liquids. Show Answer Correct Answer: A) They require a medium. 33. Gamma rays have wavelength in the range A) 10$^{-18}$ to 10$^{-10}$m. B) 10$^{-4}$ to 10$^{-2}$ m. C) 10$^{-12}$ to 10$^{-14 }$m. D) 10$^{-8}$ to 10$^{-4}$ m. Show Answer Correct Answer: C) 10$^{-12}$ to 10$^{-14 }$m. 34. James Maxwell state that A) There is a different kind of electromagnetic wave that is radio wave. B) Light is an electromagnetic wave. C) Light is a wave trough interference of light. D) None of the above. Show Answer Correct Answer: B) Light is an electromagnetic wave. 35. Which of the following is called heat radiation? A) Gamma rays. B) X-rays. C) Microwave. D) Infrared radiation. Show Answer Correct Answer: D) Infrared radiation. 36. Which of the following electromagnetic waves has the highest frequency? A) Radio waves. B) Microwaves. C) Gamma rays. D) Infrared waves. Show Answer Correct Answer: C) Gamma rays. 37. Gamma rays are used in the treatment of which disease? A) Diabetes. B) Arthritis. C) Cancer. D) Common cold. Show Answer Correct Answer: C) Cancer. 38. The height or depth of a wave that determines how much ENERGY the wave carries. In a sound wave, it is also synonymous with how much volume the wave carries. A) Wavelength. B) Compression. C) Amplitude. D) None of the above. Show Answer Correct Answer: C) Amplitude. 39. When a wave bends or spreads past a medium, this is referred to as A) Diffraction. B) Refraction. C) Reflection. D) Radiation. Show Answer Correct Answer: A) Diffraction. 40. If a star is being observed from Earth and it's light has shifted towards the blue side of the electromagnetic spectrum it would be ..... A) It isn't a star, it is a very large blueberry. B) Moving away from the Earth. C) This is a trick question that cannot be answered. D) Moving towards the Earth. Show Answer Correct Answer: D) Moving towards the Earth. 41. The difference between the different waves on the EM spectrum is ..... A) Amplitude. B) Frequency. C) Wavelength. D) None of the above. Show Answer Correct Answer: C) Wavelength. 42. Which portion of the electromagnetic spectrum is used to identify fluorescent minerals? A) Infrared. B) Gamma rays. C) Ultraviolet. D) X rays. Show Answer Correct Answer: C) Ultraviolet. 43. What is the characteristic of far infrared waves compared to near infrared waves? A) Far infrared waves are not thermal. B) Far infrared waves do not give off heat. C) Far infrared waves are closer to visible light in wavelength. D) Far infrared waves are further away from visible light in wavelength. Show Answer Correct Answer: D) Far infrared waves are further away from visible light in wavelength. 44. Electromagnetic waves are transverse waves only. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 45. Wavelength = 4.8x10$^{-12}$ m$^{}$Frequency =?$^{}$ A) 6.2x10$^{-19}$. B) 1.4x10$^{-3}$. C) 3.2x10$^{-45}$. D) 1.6x10$^{-20}$. Show Answer Correct Answer: A) 6.2x10$^{-19}$. 46. It is the entire range of wavelengths or frequencies of electromagnetic radiation A) Electromagnetic waves. B) Electromagnetic spectrum. C) Electromagnetic collection. D) None of the above. Show Answer Correct Answer: B) Electromagnetic spectrum. 47. All electromagnetic waves have the same ..... A) Frequency. B) Energy. C) Speed. D) Wavelength. Show Answer Correct Answer: C) Speed. 48. What is Electromagnetic spectrum? A) It is the visible lights. B) It is the arrangement of EM waves. C) It is the increasing wavelength. D) None of the above. Show Answer Correct Answer: B) It is the arrangement of EM waves. 49. Cell phones, televisions and radios use ..... radiation A) Radio wave. B) Tv wave. C) Gamma wave. D) None of the above. Show Answer Correct Answer: A) Radio wave. 50. This type of radiation has a range of wavelengths. The longer wavelengths of this radiation can be felt as heat on your skin. What is this radiation called? A) X-rays. B) Infrared rays. C) Gamma rays. D) Ultraviolet rays. Show Answer Correct Answer: B) Infrared rays. 51. What are Maxwell's equations and their significance? A) Maxwell's equations are three equations that only describe electric fields. B) Maxwell's equations are a set of laws governing thermodynamics. C) Maxwell's equations are four equations that describe the behavior of electric and magnetic fields and their interactions. D) Maxwell's equations are five equations related to fluid dynamics. Show Answer Correct Answer: C) Maxwell's equations are four equations that describe the behavior of electric and magnetic fields and their interactions. 52. When we look at an object we see the ..... that is reflected off of it A) Color. B) Frequency. C) Light. D) None of the above. Show Answer Correct Answer: C) Light. 53. Albert Einstein, developed the special and general theories of relativity. A) TRUE. B) FALSE. C) All the above. D) None of the above. Show Answer Correct Answer: A) TRUE. 54. Wavelength = 2/3 m A) Frequency = 2/3 Hz. B) Frequency = 3/2 Hz. C) All the above. D) None of the above. Show Answer Correct Answer: B) Frequency = 3/2 Hz. 55. Maya, Nora, and Benjamin are debating about electromagnetic waves. They want to know which type of electromagnetic wave has the longest wavelengths and the lowest frequencies. Can you help them? A) Microwaves. B) Visible light. C) Ultraviolet rays. D) Radio waves. Show Answer Correct Answer: D) Radio waves. 56. Electromagnetic waves are generated by a(n) A) Stationary charge. B) Moving charge with constant velocity. C) Accelerating charge. D) None of the above. Show Answer Correct Answer: C) Accelerating charge. 57. Which of the following is not electromagnetic waves A) $\beta$ rays. B) UV rays. C) X-rays. D) Gamma rays. Show Answer Correct Answer: A) $\beta$ rays. 58. All Em waves transfer energy. What does frequency mean in terms of energy? A) The lower the frequency the more energy and vice versa. B) The higher the frequency the less energy and vice versa. C) The higher the frequency the more energy and vice versa. D) It has nothing to do with it it just means its more dangerous. Show Answer Correct Answer: C) The higher the frequency the more energy and vice versa. 59. EM waves that make an object feel warmer A) Ultraviolet. B) Visible light. C) Red light. D) Infrared waves. Show Answer Correct Answer: D) Infrared waves. 60. AM stands for ..... modulation. A) Altitude. B) Alternating. C) Amplitude. D) None of the above. Show Answer Correct Answer: C) Amplitude. ← 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 9 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books