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 12 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 12 Physics (Part I) Chapter 8 Electromagnetic Waves Quiz 12 (60 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. ..... radiation play an important role in satellite communication. A) Ultraviolet. B) Infrared. C) Microwave. D) Visible light. Show Answer Correct Answer: C) Microwave. 2. The electromagnetic spectrum is the entire range of A) Colorsof visible light. B) Ultravioletlight. C) Gammarays and X rays. D) EMwaves. Show Answer Correct Answer: D) EMwaves. 3. This type of wave is absorbed by bones and teeth, but passes through soft tissue, producing an image on a sheet of film. A) Radio wave. B) Infrared ray. C) X-ray. D) Ultraviolet. Show Answer Correct Answer: C) X-ray. 4. Wavelengths on the left side of the Electromagnetic spectrum are ..... A) Long. B) Short. C) Average. D) None of the above. Show Answer Correct Answer: A) Long. 5. In microwave ovens, a ..... causes water molecules to rotate billions of times per second causing friction, creating TE which heats the food. A) Vibrating electric field. B) Vibrating magnetic field. C) All the above. D) None of the above. Show Answer Correct Answer: A) Vibrating electric field. 6. What is the resulting direction of a surface wave? A) Parallel. B) Circular. C) Opposite. D) Perpendicular. Show Answer Correct Answer: B) Circular. 7. The distance from one crest to another crest is called a ..... A) Wave period. B) Wavelenght. C) Lambada. D) None of these. Show Answer Correct Answer: B) Wavelenght. 8. A ship anchored at sea is rocked by waves that have crests 14 m apart. The waves travel at 7.0 m/s. At what frequency do the waves reach the ship? A) 2 Hz. B) 7 Hz. C) 21 Hz. D) 0.5 Hz. Show Answer Correct Answer: D) 0.5 Hz. 9. A disturbance in magnetic and electric fields produces light waves. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 10. Among the given EM waves below, which carries the most energy? A) Radio wave. B) Visible light. C) Ultraviolet ray. D) Microwave. Show Answer Correct Answer: C) Ultraviolet ray. 11. Which electromagnetic waves help doctors detect broken bones inside your body? A) Gamma rays. B) X-rays. C) Ultraviolet rays. D) None of the above. Show Answer Correct Answer: B) X-rays. 12. How does light travel through a uniform medium? A) In an angled path. B) In a straight line. C) In a wave-like pattern. D) In an unpredictable course. Show Answer Correct Answer: B) In a straight line. 13. When a light ray passes from water (n=1.333) into diamond (n=2.419) at an angle of 45$^\circ$, its path is A) Bent towards the normal. B) Bent away from the normal. C) Parallel to the normal. D) Not bent. Show Answer Correct Answer: A) Bent towards the normal. 14. Which electromagnetic wave has the shortest wavelenght? A) Radio waves. B) Microwaves. C) Gamma rays. D) Infrared radiation. Show Answer Correct Answer: C) Gamma rays. 15. On AM broadcasts, what remains constant? A) The speech. B) The amplitude. C) The frequency. D) The music. Show Answer Correct Answer: C) The frequency. 16. Ultraviolet waves have the next shortest wavelength after which type of light? A) Infrared light. B) Visible light. C) Gamma-ray light. D) X-ray light. Show Answer Correct Answer: B) Visible light. 17. Which of the following correctly describes the speed of electromagnetic waves in a vacuum? A) Their speed varies with frequency. B) They travel at a constant speed of $3 \times 10^8$. C) They do not travel in a vacuum. D) They travel at the speed of sound. Show Answer Correct Answer: B) They travel at a constant speed of $3 \times 10^8$. 18. The definition of the word refract is ..... A) To create energy. B) To make warm. C) To go through. D) To bend. Show Answer Correct Answer: D) To bend. 19. Which among the following facts about electromagnetic waves is the CORRECT explanation? A) They travel at a speed of 3.0 x 108 m/s. B) They require a medium to propagate. C) They have electric and magnetic components. D) They are made up of tiny bundles of energy called photons. Show Answer Correct Answer: A) They travel at a speed of 3.0 x 108 m/s. 20. Electromagnetic waves are split based on the different frequencies. This is called the ..... A) Mechanical waves. B) Expecto Patronum. C) Electromagnetic spectrum. D) Electronic waves. Show Answer Correct Answer: C) Electromagnetic spectrum. 21. What is the origin of electromagnetic waves? A) The reflection of light. B) The rotation of planets. C) The accelerated motion of electrons. D) The splitting of atoms. Show Answer Correct Answer: C) The accelerated motion of electrons. 22. A change in the frequency of a carrier wave. A) Carrier wave. B) Frequency modulation (FM). C) Amplitude modulation (AM). D) Transmission. Show Answer Correct Answer: B) Frequency modulation (FM). 23. True or False:Violet has the shortest wavelength A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 24. Thermographic cameras can be used to detect the temperature of objects by using ..... A) X-ray. B) Infrared radiation. C) Gamma rays. D) Thermometer. Show Answer Correct Answer: B) Infrared radiation. 25. Electromagnetic waves are deflected by electric field and magnetic field. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: B) False. 26. What type of electromagnetic wave is primarily used in remote controls? A) Microwave. B) Radio wave. C) Infrared wave. D) Ultraviolet wave. Show Answer Correct Answer: C) Infrared wave. 27. What are the MOST energetic electromagnetic waves called? A) X-rays. B) Ultraviolet light. C) Microwaves. D) Gamma rays. Show Answer Correct Answer: D) Gamma rays. 28. Which part of the electromagnetic spectrum moves the fastest? A) Radio waves. B) They all move the same speed. C) Visible light. D) Gamma rays. Show Answer Correct Answer: B) They all move the same speed. 29. When an electric charge vibrates, the electric field around never change. A) False. B) True. C) All the above. D) None of the above. Show Answer Correct Answer: A) False. 30. Wavelength, frequency, and energy are related. What happens to the Energy in the wave as its wavelength gets shorter? A) Its frequency and energy increase. B) Its frequency and energy decrease. C) Its frequency increases while its energy decreases. D) Its frequency decreases while its energy increases. Show Answer Correct Answer: A) Its frequency and energy increase. 31. Visible light are the only light waves we can see without using special equipment. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 32. ..... are synchronized oscillations of electric and magnetic fields. A) Ocean Waves. B) Compression Waves. C) Electromagnetic Waves. D) Sound Waves. Show Answer Correct Answer: C) Electromagnetic Waves. 33. True or False:You can remember the colors of the Rainbow by using ROY G. BIV A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 34. The more energy waves have, the more penetrating the are. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 35. Electromagnetic waves transfer energy through a vacuum. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 36. Do electromagnetic waves have the same wavelengths? A) Yes, they have the same wavelengths. B) No, the wavelengths are different. C) No, electromagnetic waves do not have wavelengths. D) None of the above. Show Answer Correct Answer: B) No, the wavelengths are different. 37. What is the order of the waves from longest to shortest A) Radiowaves, x-rays, gamma, visible light, microwaves, infrared, ultra violet. B) Gamma, X-Rays, Ultra violet, visible light, infrared, microwaves, radiowaves. C) Visible light, gamma, radiowaves, ultraviolet, infrared, x-rays. microwaves. D) Radiowaves, Microwaves, Infrared, Visible light, ultra violet, x-rays, gamma. Show Answer Correct Answer: D) Radiowaves, Microwaves, Infrared, Visible light, ultra violet, x-rays, gamma. 38. On the electromagnetic spectrum which electromagnetic wave has the highest frequency A) Microwave. B) Ultraviolet light. C) Gamma Ray. D) X-Ray. Show Answer Correct Answer: C) Gamma Ray. 39. How to the different waves travel? A) Different speeds everywhere. B) At the same speed through a vacuum but different speeds in different materials. C) At the different speed through a vacuum but same speeds in same materials. D) The same speeds everywhere. Show Answer Correct Answer: B) At the same speed through a vacuum but different speeds in different materials. 40. Danger signals are made red because A) Highest wavelength and least scattered. B) Lowest wavelength and least scattered. C) Highest wavelength and most scattered. D) Lowest wavelength and most scattered. Show Answer Correct Answer: A) Highest wavelength and least scattered. 41. What is an example of a mechanical wave? A) Microwave. B) Sound wave. C) Radio wave. D) Light wave. Show Answer Correct Answer: B) Sound wave. 42. Swimming pools and the ocean look shallower than they really are due to: A) Total internal reflection. B) Dispersion. C) Reflection. D) Refraction. Show Answer Correct Answer: D) Refraction. 43. Which of the following occurs as light travels farther from its source? A) Photons spread over a small area. B) The intensity of light increases as photons move away from the source. C) The source gives off less light as photons move away from it. D) Farther from the source photons spread over a larger area. Show Answer Correct Answer: D) Farther from the source photons spread over a larger area. 44. Global Positioning System signals can tell you ..... A) Who is sending a message to your pager. B) Your exact location on Earth. C) How many satellites are in orbit. D) What television station you are tuned to. Show Answer Correct Answer: B) Your exact location on Earth. 45. High frequency equals A) High energy. B) Low energy. C) No change in energy. D) None of the above. Show Answer Correct Answer: A) High energy. 46. In the visible light waves what color has the highest frequency electromagnetic waves? A) Yellow. B) Green. C) Red. D) Violet. Show Answer Correct Answer: D) Violet. 47. What does refract mean? A) To bend. B) To widen. C) To shrink. D) To enlarge. Show Answer Correct Answer: A) To bend. 48. Electromagnetic waves travel in a transverse form. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 49. Electromagnetic waves can behave as particles that are called ..... A) Neutrons. B) Protons. C) Electrons. D) Photons. Show Answer Correct Answer: D) Photons. 50. A heat lamp uses what kind of electromagnetic wave A) Radio waves. B) Infrared radiation. C) Microwave radiation. D) Ultraviolet light. Show Answer Correct Answer: B) Infrared radiation. 51. Which condition of motion must be met with regard to a charged particle if it is in the process of emitting electromagnetic radiation? A) Moves parallel to a uniform magnetic field. B) Moves at the speed of light. C) Moves at constant velocity. D) Moves at increasing velocity. Show Answer Correct Answer: D) Moves at increasing velocity. 52. Which of the following is an example of electromagnetic wave interaction? A) Reflection of light from a mirror. B) Water waves hitting a shore. C) Earthquake waves traveling through the ground. D) Sound traveling through air. Show Answer Correct Answer: A) Reflection of light from a mirror. 53. What does radar stand for? A) Radio detection and ranging. B) Radial disemmination and ranging. C) Recorded detection and ranging. D) None of the above. Show Answer Correct Answer: A) Radio detection and ranging. 54. Light waves aren't the only type of electromagnetic waves. In fact, there are many different types, which you are probably already familiar with, including: ..... , ..... , ..... A) Gamma rays, X-rays, ultraviolet rays. B) Sound waves, water waves, seismic waves. C) Radio waves, microwaves, infrared waves. D) Light waves. Show Answer Correct Answer: C) Radio waves, microwaves, infrared waves. 55. Review questions:What are the 2 parts that make up an electromagnetic wave? A) Waves that are filled with electricity. B) Electric field and magnets. C) Electricity and magnesium. D) Electric field and a magnetic feild. Show Answer Correct Answer: D) Electric field and a magnetic feild. 56. Which statement about electromagnetic waves is NOT true? A) Electromagnetic waves travel at the same speed. B) Electromagnetic waves need a medium to travel through. C) Electromagnetic waves carry energy. D) Electromagnetic waves can travel through space. Show Answer Correct Answer: B) Electromagnetic waves need a medium to travel through. 57. One type of interaction of electromagnetic waves is reflection, we say a wave reflects when it ..... A) Bend when entering a medium. B) Bounce back from a surface. C) Spread out around obstacles. D) None of the above. Show Answer Correct Answer: B) Bounce back from a surface. 58. Which type of electromagnetic wave is used in night vision goggles? A) Ultraviolet waves. B) Infrared waves. C) Radio waves. D) Microwaves. Show Answer Correct Answer: B) Infrared waves. 59. Which of the following describes electromagnetic waves? A) Electromagnetic waves can have low frequencies with short wavelengths. B) Electromagnetic waves can have high frequencies with long wavelengths. C) Electromagnetic waves travel at the same speed. D) Electromagnetic waves can travel at different speeds. Show Answer Correct Answer: C) Electromagnetic waves travel at the same speed. 60. Gamma rays have higher frequency than Ultraviolet rays. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. ← 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