This quiz works best with JavaScript enabled. Home > Class 12 > Class 12 Physics (Part I) Chapter 8 Electromagnetic Waves – Quiz 32 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 12 Physics (Part I) Chapter 8 Electromagnetic Waves Quiz 32 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Which electromagnetic waves have the longest wavelengths? A) Infrared rays. B) Ultraviolet. C) Visible light. D) Radio waves. Show Answer Correct Answer: D) Radio waves. 2. Different Em waves have different properties which can affect human health. What are the effects of X-Rays and Gamma Rays? A) They are mostly reflected or absorbed by skin causing heating which may be dangerous, Gamma Rays can also cause burns if the skin gets too hot. B) They are ionising so they can cause mutations and damage cells which can lead to cancer, they can also be absorbed by deeper tissue. C) All the above. D) None of the above. Show Answer Correct Answer: B) They are ionising so they can cause mutations and damage cells which can lead to cancer, they can also be absorbed by deeper tissue. 3. Rattlesnakes need to catch prey at night. What type of waves would their eyes need to see? A) Infrared rays. B) Gamma rays. C) Radio waves. D) Visible light. Show Answer Correct Answer: A) Infrared rays. 4. What color has the shortest wavelength? A) Violet. B) Blue. C) Green. D) Red. Show Answer Correct Answer: A) Violet. 5. Sunscreen is designed to protect your skin from exposure to too much ..... A) Ultraviolet radiation. B) Gamma radiation. C) Infrared radiation. D) Visible light. Show Answer Correct Answer: A) Ultraviolet radiation. 6. The frequency of the produced wave is inversely proportional to the period A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 7. If a wave has a high amplitude, it will have ..... energy. A) High. B) Medium. C) Low. D) None of the above. Show Answer Correct Answer: A) High. 8. Sometime light behaves like a A) Stream of light. B) Stream of particles. C) Stream of electricity. D) Stream of water. Show Answer Correct Answer: B) Stream of particles. 9. Why is the electromagnetic spectrum important in understanding wave applications? A) It categorizes different waves based on their danger to humans. B) It helps identify which waves are best for certain technologies. C) It shows which waves are the most colorful. D) It only includes visible light, which is essential for human vision. Show Answer Correct Answer: B) It helps identify which waves are best for certain technologies. 10. The medical profession uses ..... to sterilize medical equipment-just like the google cabinet in the science classroom. A) Infrared. B) X ray. C) Gamma. D) Ultraviolet. Show Answer Correct Answer: D) Ultraviolet. 11. Which of the following statement about electromagnetic waves is correct? A) They are longitudinal waves. B) The velocity of the waves is affected by the frequency. C) They cannot propagate through vacuum. D) They do not need medium for propagation. Show Answer Correct Answer: D) They do not need medium for propagation. 12. What happens when a mechanical wave travels through the ocean? A) Waves are transferred. B) Energy is transferred. C) Mass is transferred. D) Particles are transferred. Show Answer Correct Answer: B) Energy is transferred. 13. What type of electromagnetic waves are used to take pictures of bones in medicine? A) Gamma rays. B) Ultraviolet. C) X-Rays. D) Radio waves. Show Answer Correct Answer: C) X-Rays. 14. What fills the universe related to microwaves? A) Cosmic microwave background radiation. B) Radioactive microwave particles. C) Microwave dark matter. D) Microwave energy fields. Show Answer Correct Answer: A) Cosmic microwave background radiation. 15. Electromagnetic radiation is caused by A) The oscillation of an electric charge. B) The oscillation of a magnet. C) The oscillation of a tape delay pedal. D) The oscillation of gravity. Show Answer Correct Answer: A) The oscillation of an electric charge. 16. Which of the following are in the correct order from least to greatest frequency? A) Radio, Visible, Gamma. B) Visible, Radio, Gamma. C) Gamma, Radio, Visible. D) Gamma, Visible, Radio. Show Answer Correct Answer: A) Radio, Visible, Gamma. 17. Which electromagnetic waves are used in certain ovens and mobile phone communications? A) Infrared rays. B) Ultraviolet rays. C) Microwaves. D) X-rays. Show Answer Correct Answer: C) Microwaves. 18. What type of electromagnetic wave is used in night vision goggles? A) Infrared wave. B) Visible light. C) X-ray. D) Gamma ray. Show Answer Correct Answer: A) Infrared wave. 19. What is a constellation? A) A grouping of several thousands of stars that forms a recognizalbe pattern. B) A grouping of several stars that forms a recognizable pattern. C) A collection of several galaxies. D) A collection of several solar systems. Show Answer Correct Answer: B) A grouping of several stars that forms a recognizable pattern. 20. Which change increases the kinetic energy of electrons ejected during the photoelectric effect? A) Increasing intensity. B) Increasing wavelength. C) Increasing frequency. D) Increasing exposure time. Show Answer Correct Answer: C) Increasing frequency. 21. These are the only wavelengths the human eye can see: A) X-rays. B) Radio Waves. C) Visible Light. D) Gamma Waves. Show Answer Correct Answer: C) Visible Light. 22. The speed of the wave depends on the energy carried by the wave. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 23. What characteristic do radio waves have compared to other electromagnetic waves? A) They have the shortest wavelengths. B) They have the highest frequency. C) They have the longest wavelengths. D) They are the least used for data transmission. Show Answer Correct Answer: C) They have the longest wavelengths. 24. What are photons? A) Bundles of mass moving through air. B) Massless bundles of energy. C) Large pieces of matter. D) Ripples requiring a medium. Show Answer Correct Answer: B) Massless bundles of energy. 25. In electromagnetic wave, electric and magnetic fields are ..... each other ..... A) Parallel. B) Perpendicular. C) All the above. D) None of the above. Show Answer Correct Answer: B) Perpendicular. ← 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