This quiz works best with JavaScript enabled. Home > Class 12 > Class 12 Physics (Part I) Chapter 8 Electromagnetic Waves – Quiz 41 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 12 Physics (Part I) Chapter 8 Electromagnetic Waves Quiz 41 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Which of the following waves has the most energy A) Ultraviolet. B) Visible light. C) Infrared. D) Microwave. Show Answer Correct Answer: A) Ultraviolet. 2. Frequency = 5.00x10$^{7}$ HzWavelength =? A) 6.00E+00. B) 1.67E-01. C) 1.50E+16. D) 3.31E-26. Show Answer Correct Answer: A) 6.00E+00. 3. Light acts as a A) Wave. B) Particle. C) Both wave and a particle. D) Neither wave nor particle. Show Answer Correct Answer: C) Both wave and a particle. 4. Which electromagnetic wave has the second highest frequency on the electromagnetic spectrum? A) X-Ray. B) Gamma Ray. C) Microwave. D) Ultraviolet. Show Answer Correct Answer: A) X-Ray. 5. The speed of light (radiation) is ..... km/second. A) 3, 000. B) 300. C) 300, 000. D) None of the above. Show Answer Correct Answer: C) 300, 000. 6. Which of the following is TRUE about the speed of an EM waves? A) They travel in a vacuum at a speed of 3.0 x 10 8 m/s. B) They travel at the same speed in different media. C) They travel fastest in gases. D) They travel slowest in a vacuum or empty space. Show Answer Correct Answer: A) They travel in a vacuum at a speed of 3.0 x 10 8 m/s. 7. What is the lowest point of a wave? A) Trough. B) Crescent. C) Medium. D) None of the above. Show Answer Correct Answer: A) Trough. 8. X ray photographs show softer tissue as A) Light areas. B) Dark areas. C) They don't show it at all. D) The same as dense bones. Show Answer Correct Answer: B) Dark areas. 9. Heat seeking missiles use ..... electromagnetic technology. A) Gamma. B) X ray. C) Microwave. D) Infrared. Show Answer Correct Answer: D) Infrared. 10. What type of electromagnetic waves cause sunburns? A) Radio waves. B) Ultraviolet. C) Infrared rays. D) Microwaves. Show Answer Correct Answer: B) Ultraviolet. 11. What electromagnetic wave used in diathermy that could treat muscle pains? A) Microwave. B) Infrared. C) Gamma rays. D) Ultraviolet rays. Show Answer Correct Answer: A) Microwave. 12. Based on Maxwell starting pointsElectric field lines: A) Originate on positive charges and terminate on negative charges. B) Originate on negative charges and terminate on positive charges. C) Can be originated on either charges but terminates only on negative charges. D) Form closed loops. Show Answer Correct Answer: A) Originate on positive charges and terminate on negative charges. 13. The electromagnetic spectrum is a continuous range of ..... for electromagnetic radiation. A) Light. B) Frequencies. C) Particles. D) Magnestism. Show Answer Correct Answer: B) Frequencies. 14. A short wavelength is equal to A) A low frequency. B) Slow wave speed. C) A high frequency. D) I do not know and do not wish to answer. Show Answer Correct Answer: C) A high frequency. 15. Exposure to ionizing radiation can cause cancer. A) TRUE. B) FALSE. C) MAYBE. D) None of the above. Show Answer Correct Answer: A) TRUE. 16. Satellite Communication It is used to broadcast information over significantly large distances with the help of satellites. A) TRUE. B) FALSE. C) All the above. D) None of the above. Show Answer Correct Answer: A) TRUE. 17. When light hits something, that light can do what three things? A) Absorb, Reflect, and Transmit. B) Refract, Absorb, and Dissolve. C) Reflect, Absorb, and Rotate. D) Refract, Emit, and Absorb. Show Answer Correct Answer: A) Absorb, Reflect, and Transmit. 18. The speed of light, c, equals A) 6.022x10$^{23 }$m/s. B) 2.998x10$^{8}$ m/s. C) 6.626x10$^{-34 }$m/s. D) 1.06x10$^{-19 }$m/s. Show Answer Correct Answer: B) 2.998x10$^{8}$ m/s. 19. This is how we perceive the amplitude (intensity) of EM waves (light). (Vocab) A) Brightness. B) Color. C) Smell. D) Pitch. E) Volume. Show Answer Correct Answer: A) Brightness. 20. When vibrating electrons lose energy, they emit A) Kinetic energy. B) Electromagnetic waves. C) Particles. D) None of the above. Show Answer Correct Answer: B) Electromagnetic waves. 21. Which type of electromagnetic wave has the shortest wavelength? A) Gamma Ray. B) X-ray. C) Microwave. D) Radio waves. Show Answer Correct Answer: A) Gamma Ray. 22. Gamma Rays are A) High energy. B) Low energy. C) Medium energy. D) Not Dangerous. Show Answer Correct Answer: A) High energy. 23. Which of the following lists correctly identifies the colors of white light in order of increasing wavelength? A) Blue, green, yellow, orange, red, violet, indigo. B) Green, yellow, orange, red, blue, indigo, violet. C) Red, orange, yellow, green, blue, indigo, violet. D) Violet, indigo, blue, green, yellow, orange, red. Show Answer Correct Answer: C) Red, orange, yellow, green, blue, indigo, violet. 24. Which electromagnetic waves are used in sunbeds for tanning? A) Radio waves. B) Microwaves. C) Ultraviolet waves. D) Infrared waves. Show Answer Correct Answer: C) Ultraviolet waves. 25. What is the description for ultraviolet rays? A) Has the least amount of energy. B) Causes skin to tan. C) Allows night vision. D) See broken bones. Show Answer Correct Answer: B) Causes skin to tan. ← PreviousNext →Related 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 8Class 12 Physics (Part I) Chapter 8 Electromagnetic Waves Quiz 9Class 12 Physics (Part I) Chapter 8 Electromagnetic Waves Quiz 10 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books