This quiz works best with JavaScript enabled. Home > Class 12 > Class 12 Physics (Part I) Chapter 8 Electromagnetic Waves – Quiz 6 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 12 Physics (Part I) Chapter 8 Electromagnetic Waves Quiz 6 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. A wave that can travel through empty space and through matter is called an ..... A) Electromagnetic wave. B) Radiant wave. C) Radio wave. D) Heat wave. Show Answer Correct Answer: A) Electromagnetic wave. 2. Why are X-rays used in imaging of broken bones, rather than radio waves? A) X-rays have higher penetrating energy than radio waves. B) X-Rays have lower penetrating energy than radio waves. C) X-Rays have a lower frequency range than radio waves. D) X-Rays have longer wavelengths than radio waves. Show Answer Correct Answer: A) X-rays have higher penetrating energy than radio waves. 3. Which particle is a wave of light? A) Proton. B) Neutron. C) Electron. D) Photon. Show Answer Correct Answer: D) Photon. 4. Microphones and cameras are examples of which component in radio communication? A) Demodulator. B) Input transducer. C) Modulator. D) Output transducer. Show Answer Correct Answer: B) Input transducer. 5. What is the frequency of red light that has a wavelength of $7.5\\times10^{-7}$ A) $4\times10^{-14}$. B) $4\times10^{14}$. C) $2.5\times10^{14}$. D) $2.5\times10^{-14}$. Show Answer Correct Answer: B) $4\times10^{14}$. 6. Which part of the electromagnetic spectrum has the LEAST amount of energy? A) Gamma Rays. B) X-Rays. C) Microwaves. D) Radio Waves. Show Answer Correct Answer: D) Radio Waves. 7. White light is A) Monochromatic. B) Polychromatic. C) All the above. D) None of the above. Show Answer Correct Answer: B) Polychromatic. 8. Which scientist demonstrated the magnetic effect based on the direction of current? A) Andre-Marie Ampere. B) Michael Faraday. C) Heinrich Hertz. D) Hans Christian Oersted. Show Answer Correct Answer: A) Andre-Marie Ampere. 9. What is the part of a longitudinal wave where particles are close together? A) Compression. B) Rarefaction. C) Wave Crest. D) Trough. Show Answer Correct Answer: A) Compression. 10. These are examples of phenomenon of scattering of light except A) Sky appears blue at midday. B) Sky appears reddish in the evening. C) Rainbow after rain. D) None of the above. Show Answer Correct Answer: C) Rainbow after rain. 11. Is the following sentence true or false? Electromagnetic waves need a medium to travel through. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: B) False. 12. What electromagnetic wave used in sterilizing water from drinking fountains? A) Microwaves. B) Infrared rays. C) Gamma rays. D) Ultraviolet rays. Show Answer Correct Answer: D) Ultraviolet rays. 13. FM stands for A) Frequency Metering. B) Frequency Modulation. C) Frequency Monitoring. D) Frequency Making. Show Answer Correct Answer: B) Frequency Modulation. 14. Why are X-rays useful in medical imaging? A) They are visible to the human eye. B) They can pass through soft tissues but are absorbed by bones. C) They are safe for all living tissues. D) They are used to sterilize equipment. Show Answer Correct Answer: B) They can pass through soft tissues but are absorbed by bones. 15. Which statement about the electromagnetic spectrum is accurate? A) Gamma waves travel slower than radio waves. B) Ultraviolet waves make up most of the spectrum. C) X-rays travel slower than infrared waves. D) Visible light waves are a small part of the spectrum. Show Answer Correct Answer: D) Visible light waves are a small part of the spectrum. 16. A packet of light energy is called a A) Futon. B) Photon. C) Foot ball. D) Photo. Show Answer Correct Answer: B) Photon. 17. Which electromagnetic wave is commonly used in microwave ovens? A) Radio wave. B) Microwave. C) Infrared wave. D) Ultraviolet wave. Show Answer Correct Answer: B) Microwave. 18. Which type of electromagnetic wave is commonly used for sterilizing medical equipment? A) Infrared. B) Ultraviolet. C) Radio waves. D) Visible light. Show Answer Correct Answer: B) Ultraviolet. 19. Electromagnetic wave that our our eyes are sensitive to A) Infrared. B) Light. C) Ultraviolet. D) Gamma ray. Show Answer Correct Answer: B) Light. 20. How is the energy associated with an electromagnetic wave related to the frequency of the wave? A) As the frequency increases, the energy of the wave increases. B) As the frequency increases, the energy of the wave decreases. C) The energy of an electromagnetic wave is not related to its frequency. D) None of the above. Show Answer Correct Answer: A) As the frequency increases, the energy of the wave increases. 21. What demonstrates the correct order that allows us to see? A) Object makes light, light travels to our eyes. B) Light source, object, our eyes. C) Object, light source, our eyes. D) Our eyes, light source, object. Show Answer Correct Answer: B) Light source, object, our eyes. 22. What type of electromagnetic wave is used in radar technology to detect the speed of a car? A) Microwaves. B) Infrared waves. C) X-rays. D) Gamma rays. Show Answer Correct Answer: A) Microwaves. 23. Cell phones transmit and receive ..... waves. A) Infrared. B) Radio. C) Gamma. D) Micra. Show Answer Correct Answer: D) Micra. 24. It is used in satellite communication A) Infrared. B) Gamma Rays. C) Ultraviolet rays. D) Microwave. Show Answer Correct Answer: D) Microwave. 25. What is wave-particle duality in the context of light? A) Light can exist as a solid object without any wave properties. B) Wave-particle duality refers to the concept that light exhibits both wave-like and particle-like properties. C) Wave-particle duality applies only to sound waves. D) Light only behaves as a wave and not as a particle. Show Answer Correct Answer: B) Wave-particle duality refers to the concept that light exhibits both wave-like and particle-like properties. ← 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 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 10Class 12 Physics (Part I) Chapter 8 Electromagnetic Waves Quiz 11 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books