This quiz works best with JavaScript enabled. Home > Class 12 > Class 12 Physics (Part I) Chapter 8 Electromagnetic Waves – Quiz 38 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 12 Physics (Part I) Chapter 8 Electromagnetic Waves Quiz 38 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. How does changing the amplitude affect a light wave? A) It changes the volume. B) It changes the intensity. C) It changes the the type of wave. D) It doesn't change anything. Show Answer Correct Answer: B) It changes the intensity. 2. Which of the following is the correct order for the visible light spectrum starting with the longest wavelength and ending with the shortest? A) Red, orange, yellow, green, blue, indigo, violet. B) Violet, indigo, blue, yellow, orange, red. C) Red, blue, yellow. D) Yellow, orange, red, green, indigo, blue, violet. Show Answer Correct Answer: A) Red, orange, yellow, green, blue, indigo, violet. 3. The vast majority of galaxies in our universe are moving away from us. We know this because we observe ..... in the galaxies absorption spectra. A) Redshift. B) Blueshift. C) Turbulance. D) Superposition. Show Answer Correct Answer: A) Redshift. 4. If you're moving from gamma rays to microwave, describe how the energy level changes A) Increases. B) Decreases. C) Energy level doesn't change. D) We never talked about it. Show Answer Correct Answer: B) Decreases. 5. A change in the amplitude of a carrier wave is called ..... A) Frequency modulation (FM). B) Amplitude modulation (AM). C) Broadcasting. D) Reception. Show Answer Correct Answer: B) Amplitude modulation (AM). 6. Waves that have a higher ..... , have a higher energy. A) Frequency. B) Wavelength. C) Amplitude. D) Magnetism. Show Answer Correct Answer: A) Frequency. 7. Is the statement correct?Photosynthesis is the process that uses electromagnetic waves in the form of light as a source of energy to produce food in plants and photosynthetic organisms. A) YES. B) No. C) All the above. D) None of the above. Show Answer Correct Answer: A) YES. 8. As an electromagnetic wave travels through free space, its speed can be increased by ..... A) Increasing its frequency. B) Increasing its energy only. C) Increasing both its energy and momentum. D) Nothing will increase its speed. Show Answer Correct Answer: D) Nothing will increase its speed. 9. The velocity of light is least in ..... and highest in ..... light. A) Least in red, highest in violet. B) Least in violet, highest in red. C) All the above. D) None of the above. Show Answer Correct Answer: B) Least in violet, highest in red. 10. Which of the following best describes radio waves? A) Used to identify heat signatures of people lost in the wilderness. B) Used to broadcast television signals. C) Widely used in the cooking industry. D) Used in tanning beds. Show Answer Correct Answer: B) Used to broadcast television signals. 11. Is it possible to exceed the speed of light? A) Yes. B) No. C) All the above. D) None of the above. Show Answer Correct Answer: B) No. 12. Identify the region of the electromagnetic spectrum used for medical imaging. A) Radio waves. B) X-rays. C) Infrared. D) Ultrasound. Show Answer Correct Answer: B) X-rays. 13. Honeybees can see light of shorter wavelengths than humans, but they cannot see red light. What do you think is the kind of radiation that honeybees can see? A) Ultraviolet rays. B) Gamma rays. C) Radio waves. D) Visible light. Show Answer Correct Answer: A) Ultraviolet rays. 14. Which of the following has the shortest wavelength? A) Gamma rays. B) Microwaves. C) Radiowaves. D) Ultraviolet rays. Show Answer Correct Answer: A) Gamma rays. 15. Which of these colors of visible light has the shortest wavelength? A) Red. B) Green. C) Violet. D) Yellow. Show Answer Correct Answer: C) Violet. 16. The stationary wave pattern formed in a medium when two sets of identical waves pass through the medium in opposite directions is a A) Transverse wave. B) Standing wave. C) Walking wave. D) Shifting wave. Show Answer Correct Answer: B) Standing wave. 17. If a wave has a high frequency, it will have ..... energy. A) High. B) Medium. C) Low. D) None of the above. Show Answer Correct Answer: A) High. 18. Which color has the shortest wavelength and highest frequency? A) Violet. B) Yellow. C) Orange. D) Green. Show Answer Correct Answer: A) Violet. 19. Frequencies is called the electromagnetic spectrum A) True. B) False. C) Both. D) None of the above. Show Answer Correct Answer: B) False. 20. Which electromagnetic wave has the longest wavelength? A) Gamma rays. B) X-rays. C) Radio waves. D) Ultraviolet waves. Show Answer Correct Answer: C) Radio waves. 21. Which wave on the Electromagnetic spectrum has the lowest frequency and longest wavelength? A) Gamma Waves. B) X Rays. C) Ultraviolet Waves. D) Radio Waves. Show Answer Correct Answer: D) Radio Waves. 22. What is the description for visible light? A) Has the least amount of energy. B) Causes skin to tan. C) Allows you to see. D) Can see broken bones. Show Answer Correct Answer: C) Allows you to see. 23. Waves that require a material to travel though are called A) Electromagnetic waves. B) Mechanical waves. C) Ocean waves. D) Transverse waves. E) I do not know and do not wish to answer. Show Answer Correct Answer: B) Mechanical waves. 24. A system that uses reflective microwaves to detect speed. A) Radar. B) Speed trap. C) Thermogram. D) X ray. Show Answer Correct Answer: A) Radar. 25. ..... is the electromagnetic wave with the longest wavelength. A) Ultraviolet. B) X-ray. C) Gamma ray. D) Radio wave. Show Answer Correct Answer: D) Radio wave. ← 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