This quiz works best with JavaScript enabled. Home > Class 12 > Class 12 Physics (Part I) Chapter 8 Electromagnetic Waves – Quiz 22 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 12 Physics (Part I) Chapter 8 Electromagnetic Waves Quiz 22 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Which color reflects the most light? A) Black. B) White. C) Yellow. D) None of the above. Show Answer Correct Answer: B) White. 2. Which of the following best describes ultraviolet light? A) Used by medical professionals to "see" inside the body. B) Used to broadcast television signals. C) Widely used in the cooking industry. D) Used in tanning beds. Show Answer Correct Answer: D) Used in tanning beds. 3. Which electromagnetic waves are used in medical imaging to view soft tissues? A) X-rays. B) Ultrasound. C) MRI. D) Radio waves. Show Answer Correct Answer: C) MRI. 4. The distance between two crests or two troughs of a wave is called: A) Frequency. B) Amplitud. C) Wavelength. D) Hertz. Show Answer Correct Answer: C) Wavelength. 5. Cell phones and satellites use ..... between 1 cm & 20 cm for communication. A) Microwaves. B) Car waves. C) All the above. D) None of the above. Show Answer Correct Answer: A) Microwaves. 6. ..... is relatively low energy radiation that does not have enough energy to ionize atoms or molecules. They are located at the low end of the electromagnetic spectrum. A) Non-ionizing radiation. B) Ionizing radiation. C) Gamma rays. D) X-rays. Show Answer Correct Answer: A) Non-ionizing radiation. 7. A sound wave and a light wave can bounce back off an object, what is this called? A) Refracting. B) Reflecting. C) Frequency. D) None of the above. Show Answer Correct Answer: B) Reflecting. 8. Electromagnetic waves are unique due to their ability to do which of the following? A) Travel through space. B) ONLY travel in space. C) Both 1 and 2. D) None of these. Show Answer Correct Answer: A) Travel through space. 9. In a vacuum, as the wavelengths of electromagnetic waves increase, the frequencies A) Decrease. B) Increase. C) Remain constant. D) None of the above. Show Answer Correct Answer: A) Decrease. 10. Electromagnetic waves are commonly referred to as? A) Light. B) Sound. C) Matter. D) Space. Show Answer Correct Answer: A) Light. 11. Which of the following best describes the nature of electromagnetic waves? A) They require a medium to travel through. B) They are longitudinal waves. C) They consist of oscillating electric and magnetic fields. D) They can only travel through solid materials. Show Answer Correct Answer: C) They consist of oscillating electric and magnetic fields. 12. Rhythmic disturbances that carry energy are called ..... A) Ripples. B) Bubbles. C) Waves. D) Pulsars. Show Answer Correct Answer: C) Waves. 13. These are Electromagnetic waves characteristic except A) Transverse wave. B) Longitudinal wave. C) Do not need medium for propagation. D) Moves with speed of light. Show Answer Correct Answer: B) Longitudinal wave. 14. Optical fibers used in communication carry information in the form of ..... A) Radio waves. B) Microwaves. C) Visible light. D) Infrared. Show Answer Correct Answer: C) Visible light. 15. Which of the following lists the visible spectrum in order of decreasing frequency? A) Yellow orange, violet. B) Yellow, blue, violet. C) Yellow, green, white. D) Yellow, orange, red. Show Answer Correct Answer: D) Yellow, orange, red. 16. ..... have the highest energy and shortest wavelength of all electromagnetic waves. A) Gamma. B) X Ray. C) Radio. D) Microwaves. Show Answer Correct Answer: A) Gamma. 17. THE ENERGY THAT ELECTROMAGNETIC WAVES TRANSFER THROUGH MATTER OR SPACE IS CALLED ..... A) PHOTOELECTRICITY. B) POLARIZED LIGHT. C) ELECTROMAGNETIC SPECTRUM. D) ELECTROMAGNETIC RADIATION. Show Answer Correct Answer: D) ELECTROMAGNETIC RADIATION. 18. Which electromagnetic wave can travel the least distances because it has a wavelength range of less than 1x10-11 meters but has the highest energy? A) Gamma ray. B) Microwave. C) Radio wave. D) X-ray. Show Answer Correct Answer: A) Gamma ray. 19. Which type of wave requires a medium? A) Sound waves. B) Light waves. C) Electromagnetic waves. D) None of the above. Show Answer Correct Answer: A) Sound waves. 20. Explain how electromagnetic waves are generated by charged particles. A) Electromagnetic waves are created when charged particles collide with each other. B) Electromagnetic waves are produced only by static charged particles. C) Charged particles generate electromagnetic waves by emitting sound waves. D) Electromagnetic waves are generated by the acceleration of charged particles, creating changing electric and magnetic fields that propagate through space. Show Answer Correct Answer: D) Electromagnetic waves are generated by the acceleration of charged particles, creating changing electric and magnetic fields that propagate through space. 21. Radio Broadcasting is modulated with the help of various modulation techniques such as (AM) and (FM). A) TRUE. B) FALSE. C) All the above. D) None of the above. Show Answer Correct Answer: A) TRUE. 22. Different Em waves have different properties which can affect human health. What are the effects of Infrared and Visible light? A) They are mostly reflected or absorbed by skin causing heating, Infrared can 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: A) They are mostly reflected or absorbed by skin causing heating, Infrared can cause burns if the skin gets too hot. 23. Which part of the electromagnetic spectrum is responsible for the greenhouse effect on Earth? A) Ultraviolet rays. B) Infrared rays. C) X-rays. D) Gamma rays. Show Answer Correct Answer: B) Infrared rays. 24. What phenomenon explains the bending of light as it passes through different mediums? A) Reflection. B) Refraction. C) Diffraction. D) Absorption. Show Answer Correct Answer: B) Refraction. 25. A microwave oven emits radiation at a wavelength of 0.050 m. What is the frequency of this radiation? (Hint:Use the speed of light.) A) 6.67 x 10$^{7}$ Hz. B) 2.00 Hz. C) 1.50 x 10$^{6}$ Hz. D) 6.00 x 10$^{9}$ Hz. Show Answer Correct Answer: D) 6.00 x 10$^{9}$ Hz. ← 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