This quiz works best with JavaScript enabled. Home > Class 12 > Class 12 Physics (Part I) Chapter 8 Electromagnetic Waves – Quiz 9 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 12 Physics (Part I) Chapter 8 Electromagnetic Waves Quiz 9 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. A wave with short wavelengths has a ..... frequency A) Low. B) Medium. C) High. D) None of the above. Show Answer Correct Answer: C) High. 2. Elijah, Maya, and Daniel are discussing electromagnetic waves. They are trying to figure out which type of electromagnetic wave has wavelengths shorter than visible light but longer than X-rays. Can you help them? A) Ultraviolet rays. B) Infrared rays. C) X-rays. D) Gamma rays. Show Answer Correct Answer: A) Ultraviolet rays. 3. Which of the following waves require a medium to propagate ..... A) Acoustic Waves. B) Electromagnetic Waves. C) Both require medium. D) None of the above. Show Answer Correct Answer: A) Acoustic Waves. 4. RADAR is the acronym for radio detection and reactions. A) TRUE. B) FALSE. C) All the above. D) None of the above. Show Answer Correct Answer: B) FALSE. 5. A wave transmits ..... A) Energy. B) Gravity. C) Germs. D) None of the above. Show Answer Correct Answer: A) Energy. 6. Radio waves are carried from an antenna to your car radio. This is an example of ..... A) Absorption. B) Transmission. C) Reflection. D) Refraction. Show Answer Correct Answer: B) Transmission. 7. Which is true of a mechanical wave? A) It must have a medium. B) It must travel in empty space. C) It can travel in a vacuum. D) Both sound and light are examples. Show Answer Correct Answer: A) It must have a medium. 8. How would a wave in a wave machine change going from skewers with spice drops to bare skewers? A) Not change. B) Speed up. C) Slow down. D) It's a guessing game really. Show Answer Correct Answer: B) Speed up. 9. Cellular phones utilize ..... A) Microwaves. B) Radar waves. C) Very high frequency waves. D) Very low frequency waves. Show Answer Correct Answer: A) Microwaves. 10. EM waves carry both energy and momentum, which can be delivered to a surface. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 11. FM radio waves can travel great distances because they bounce off the atmosphere. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: B) False. 12. Microwaves are used in which of the following applications for detecting objects and their speed? A) Ultrasound. B) Radar. C) X-rays. D) Seismology. Show Answer Correct Answer: B) Radar. 13. Which electromagnetic wave is invisible to our eye? A) Ultraviolet. B) Violet. C) Green. D) Red. Show Answer Correct Answer: A) Ultraviolet. 14. Which of the following statements correctly describes the relationship between frequency and wavelength in the electromagnetic spectrum? A) As frequency increases, wavelength decreases. B) As frequency decreases, wavelength decreases. C) Frequency and wavelength are independent of each other. D) As frequency increases, wavelength increases. Show Answer Correct Answer: A) As frequency increases, wavelength decreases. 15. Large frequency = A) Small energy. B) Large energy. C) All the above. D) None of the above. Show Answer Correct Answer: B) Large energy. 16. To verify the hypothesis that coil wire thickness affects output voltage, what would be the best approach? A) Increase the number of coils only. B) Use a weaker magnet with the same coil. C) Add more magnets without changing the coil. D) Change the coil thickness and measure output. Show Answer Correct Answer: D) Change the coil thickness and measure output. 17. Electromagnetic wave with a wavelength between about 1mm and 700 billionths of a meter A) Infrared wave. B) Microwave. C) Radio wave. D) Ultraviolet wave. Show Answer Correct Answer: A) Infrared wave. 18. What are materials that let's all light through? A) Transparent. B) Translucent. C) Opaque. D) None of the above. Show Answer Correct Answer: A) Transparent. 19. What are the uses of X-rays according to the learning material? A) Cooking and baking. B) Medical imaging and airport security. C) Communication and broadcasting. D) Water purification and waste management. Show Answer Correct Answer: B) Medical imaging and airport security. 20. What is the wavelength range for the FM radio band (88 MHz-108 MHz)?c= 3.00 x 10$^{8}$ m/s. $\lambda=\frac{c}{f}$ A) 4.3 m / 3 m. B) 5.0 m / 4.6 m. C) 3.4 m/2.78 m. D) 5.4 m/ 7.78 m. Show Answer Correct Answer: C) 3.4 m/2.78 m. 21. The frequency of waves is measured in A) Meters. B) Hertz. C) Kilograms. D) Inches. Show Answer Correct Answer: B) Hertz. 22. Which is true about electromagnetic waves? A) All travel at the same speed. B) All have the same frequency. C) All have the same wavelength. D) All transport energy but not momentum. Show Answer Correct Answer: A) All travel at the same speed. 23. X-rays carry more energy than visible light. Compare the frequencies and wavelengths of these two types of EM radiation. Visible light has- A) Higher frequencies and shorter wavelengths than X-rays. B) Lower frequencies and shorter wavelengths than X-rays. C) Higher frequencies and longer wavelengths than X-rays. D) Lower frequencies and longer wavelengths than X-rays. Show Answer Correct Answer: D) Lower frequencies and longer wavelengths than X-rays. 24. Which of the following properties of electromagnetic waves determines their color in the visible spectrum? A) Amplitude. B) Frequency. C) Wavelength. D) Speed. Show Answer Correct Answer: C) Wavelength. 25. When light (or other electromagnetic radiation) travels across a given region, which of the followingis/are oscillating?I. Electric fieldII. Magnetic fieldIII. Energy A) I only. B) II only. C) III only. D) I and II only. E) I, II and III. Show Answer Correct Answer: D) I and II only. ← 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 10Class 12 Physics (Part I) Chapter 8 Electromagnetic Waves Quiz 11 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books