This quiz works best with JavaScript enabled. Home > Class 11 > Class 11 Physics (Part Ii) Chapter 17 Waves – Quiz 12 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 11 Physics (Part Ii) Chapter 17 Waves Quiz 12 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Which type of EM waves has the shortest wavelength? A) Radio wave. B) Visible light. C) Gamma ray. D) Ultraviolet. Show Answer Correct Answer: C) Gamma ray. 2. Which symbol is used for wavelength? A) $\lambda$. B) F. C) WS. D) P. Show Answer Correct Answer: A) $\lambda$. 3. Which has a shorter wavelength, Red or Blue? A) Red. B) Blue. C) All the above. D) None of the above. Show Answer Correct Answer: B) Blue. 4. When sound is created, it travels to the ear through a A) Compression. B) Medium. C) Rarefaction. D) Surface. Show Answer Correct Answer: B) Medium. 5. Cell phone signals are transmitted by ..... A) Radio Waves. B) Infrared Rays. C) Ultraviolet Rays. D) X-Rays. Show Answer Correct Answer: A) Radio Waves. 6. What type of wave requires a medium to travel? A) Electromagnetic waves. B) Mechanical waves. C) Sound waves in a vacuum. D) Radio waves in space. Show Answer Correct Answer: B) Mechanical waves. 7. In an experiment, a wave travels through a medium and its speed is measured. If the frequency of the wave is doubled, what happens to the wavelength, assuming the speed remains constant? A) The wavelength doubles. B) The wavelength is halved. C) The wavelength remains the same. D) The wavelength becomes zero. Show Answer Correct Answer: B) The wavelength is halved. 8. Low frequency = ..... pitch A) HIGH. B) LOW. C) MEDIUM. D) STRAIGHT. Show Answer Correct Answer: B) LOW. 9. A vibrating object makes 25 complete back and forth vibrations in 5 seconds. The frequency of vibration of the object is ..... Hertz. A) 0.25. B) 4.0. C) 5.0. D) 20.0. Show Answer Correct Answer: C) 5.0. 10. As the wavelength of a wave increases, its frequency ..... A) Increases. B) Decreases. C) Is unaffected. D) None of the above. Show Answer Correct Answer: B) Decreases. 11. When a plane moves faster than the speed of sound and breaks the sound barrier: A) The Doppler effect is observed. B) A sonic boom is produced. C) The plane will slow down. D) A infrared light will be produced. Show Answer Correct Answer: B) A sonic boom is produced. 12. When a wave enters a new medium and one side of the wave changes speed before the other it causes the wave to ..... A) Break. B) Fold. C) Bend. D) Ignite. Show Answer Correct Answer: C) Bend. 13. What is another word for compressional waves? A) Transverse. B) Rarefaction. C) Longitudinal. D) Electromagnetic. Show Answer Correct Answer: C) Longitudinal. 14. The speed of a wave depends upon the ..... A) Frequency of the wave. B) Wavelength of the wave. C) Properties of the medium. D) Period of the wave. Show Answer Correct Answer: C) Properties of the medium. 15. What is wave reflection? A) The process of a wave changing direction when it encounters a boundary. B) The process of a wave being absorbed by a surface. C) The process of a wave bouncing off a surface when it encounters a boundary. D) The process of a wave passing through a surface without any change. Show Answer Correct Answer: C) The process of a wave bouncing off a surface when it encounters a boundary. 16. What type of wave must have a medium to vibrate? A) Mechanical. B) Electromagnetic. C) Infrared. D) Radio. Show Answer Correct Answer: A) Mechanical. 17. What is the frequency of a wave traveling at 300 m/s with a 4 m wavelength? A) 0.013 Hz. B) 75 Hz. C) 300 Hz. D) 1200 Hz. Show Answer Correct Answer: B) 75 Hz. 18. A mechanical wave travels from point A to point B. Which is true about this process? A) The wave transferred energy from A to B. B) The wave transferred matter from A to B. C) The wave transferred energy and matter from A to B. D) The wave did not move matter or energy from A to B. (It only moved them in place.). Show Answer Correct Answer: A) The wave transferred energy from A to B. 19. What makes electromagnetic waves different from mechanical waves? A) No medium required. B) Medium needed. C) Light-catalyzed. D) Space exclusive. Show Answer Correct Answer: A) No medium required. 20. Increasing speed, decreasing speed, and changing direction are all types of A) Acceleration. B) Speed. C) Slope. D) Velocity. Show Answer Correct Answer: A) Acceleration. 21. In davisson-Germer experiment, the filamentemits:- A) Photons. B) Protons. C) X-rays. D) Electrons. Show Answer Correct Answer: D) Electrons. 22. Two sound waves of frequencies 300 Hz and 600 Hz travels in air then the ratio between their speed is ..... A) 1:1. B) 1:2. C) 2:1. D) No correct answer. Show Answer Correct Answer: A) 1:1. 23. Definition:Wave A) Matter through which a wave travels. B) A disturbance that transfers energy from one place to another. C) The distance between two corresponding parts of a wave. D) The lowest point of a transverse wave. Show Answer Correct Answer: B) A disturbance that transfers energy from one place to another. 24. When a wave's amplitude increases it means A) It's carrying more energy. B) Its wavelength gets longer. C) Its frequency increases. D) Its wavelength decreases. Show Answer Correct Answer: A) It's carrying more energy. 25. The frequency of a wave is measured in (a) . A) A. Hertz. B) Crest. C) Trough. D) Compression. E) Rarefaction. Show Answer Correct Answer: A) A. Hertz. ← PreviousNext →Related QuizzesClass 11 Physics (Part Ii) Chapter 17 Waves Quiz 1Class 11 Physics (Part Ii) Chapter 17 Waves Quiz 2Class 11 Physics (Part Ii) Chapter 17 Waves Quiz 3Class 11 Physics (Part Ii) Chapter 17 Waves Quiz 4Class 11 Physics (Part Ii) Chapter 17 Waves Quiz 5Class 11 Physics (Part Ii) Chapter 17 Waves Quiz 6Class 11 Physics (Part Ii) Chapter 17 Waves Quiz 7Class 11 Physics (Part Ii) Chapter 17 Waves Quiz 8Class 11 Physics (Part Ii) Chapter 17 Waves Quiz 9Class 11 Physics (Part Ii) Chapter 17 Waves Quiz 10 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books