This quiz works best with JavaScript enabled. Home > Class 12 > Class 12 Physics (Part I) Chapter 8 Electromagnetic Waves – Quiz 8 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 12 Physics (Part I) Chapter 8 Electromagnetic Waves Quiz 8 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. The sounds made by tuning forks or other harmonic oscillating bodies are called musical sounds A) Timbre. B) Tone. C) Musical sounds. D) Frequency. Show Answer Correct Answer: C) Musical sounds. 2. A student is measuring the distance between the crest and the rest position of both a mechanical wave and an electromagnetic wave. Which question is the student trying to answer? A) What is the speed of the waves?. B) What is the amplitude of the waves?. C) What is the wavelength of the waves?. D) What is the frequency of the waves?. Show Answer Correct Answer: B) What is the amplitude of the waves?. 3. Which scientist performed an experiment to calculate the speed of light using mirrors A) Einstein. B) Thomas Young. C) Alfred Michelson. D) Isaac Newton. Show Answer Correct Answer: C) Alfred Michelson. 4. This wave has an amplitude. A) Electromagentic. B) Mechanical. C) Both. D) None of the above. Show Answer Correct Answer: C) Both. 5. When a wave bends around another object, what is happening? A) Reflection. B) Diffraction. C) Refraction. D) Reference. Show Answer Correct Answer: B) Diffraction. 6. In a longitudinal wave, the medium travels ..... to the direction of wave motion A) Perpendicular. B) Parallel. C) All the above. D) None of the above. Show Answer Correct Answer: B) Parallel. 7. What electromagnetic wave that can penetrate the flesh but not the bones? A) Infrared. B) Microwave. C) Radiowave. D) X-ray. Show Answer Correct Answer: D) X-ray. 8. Which of the following properties is unique to electromagnetic waves compared to mechanical waves? A) They require a medium to travel through. B) They can travel through a vacuum. C) They have a fixed speed in all media. D) They are always visible to the human eye. Show Answer Correct Answer: B) They can travel through a vacuum. 9. Maxwell's equations describe the fundamental laws of A) Electricity only. B) Magnetism only. C) Mechanics only. D) Both (A) and (B). Show Answer Correct Answer: D) Both (A) and (B). 10. What kind of electromagnetic radiation has the highest energy? A) Ultraviolet rays. B) Gamma rays. C) Visible light. D) X-rays. Show Answer Correct Answer: B) Gamma rays. 11. Wavelength can be measured from one top of a wave to the next top of a wave. It can also be measured from one bottom of a wave to the next bottom of the wave A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 12. Energy that travels from the sun travels in the form of a wave we call ..... A) Magnetic energy. B) Electromagnetic energy. C) Solar electric energy. D) Electric energy. Show Answer Correct Answer: B) Electromagnetic energy. 13. An antenna of a radio detects ..... A) Radio waves. B) Sound waves. C) Ocean waves. D) Mountain waves. Show Answer Correct Answer: A) Radio waves. 14. What is the phenomenon called when light bends as it passes through a different medium? A) Reflection. B) Refraction. C) Diffraction. D) Absorption. Show Answer Correct Answer: B) Refraction. 15. Electromagnetic waves are made of ..... and magnetic field that oscilllate ..... to one another. A) Electric field, parallel. B) Mechanical field, perpendicularly. C) Electric field, perpendicularly. D) None of the above. Show Answer Correct Answer: C) Electric field, perpendicularly. 16. Which types of waves can travel through a vacuum? A) Mechanical. B) Light. C) Sound. D) Seismic. Show Answer Correct Answer: B) Light. 17. Things that look ..... absorb all the visible light shining on them. A) Blue. B) White. C) Green. D) Black. Show Answer Correct Answer: D) Black. 18. Which of these colors has the shortest wavelength? A) Green. B) Red. C) Blue. D) Orange. Show Answer Correct Answer: C) Blue. 19. Which of the following occurs as a light wave bends when it passes from one medium into another? A) Constructive interference. B) Refraction. C) Destructive interference. D) Reflection. Show Answer Correct Answer: B) Refraction. 20. Name the electromagnetic wave that causes fluorescence. A) X-rays. B) Visible Light. C) Gamma Rays. D) Ultraviolet Rays. Show Answer Correct Answer: D) Ultraviolet Rays. 21. What do we call the part of a compressional wave that is spread a part? A) Compression. B) Rarefaction. C) Crest. D) Trough. Show Answer Correct Answer: B) Rarefaction. 22. Which of the following are in the correct order from least to greatest energy? A) Radio, Visible, Gamma. B) Visible, Radio, Gamma. C) Gamma, Radio, Visible. D) Gamma, Visible, Radio. Show Answer Correct Answer: A) Radio, Visible, Gamma. 23. Visible light is the only EM wave that can be seen by our naked eye. What is the color of light if it has a frequency of 4.5 x1014 Hz? A) Blue. B) Green. C) Red. D) Yellow. Show Answer Correct Answer: C) Red. 24. Electromagnetic radiation behaves sometimes like a(n) ..... and sometimes like a(n) ..... A) Wave, stream of particles. B) Solid, liquid. C) Gas, plasma. D) None of the above. Show Answer Correct Answer: A) Wave, stream of particles. 25. Electromagnetic waves are produced by: A) Static charge. B) Charge less particle. C) Accelerating charge. D) None of these. Show Answer Correct Answer: C) Accelerating charge. ← 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 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