This quiz works best with JavaScript enabled. Home > Class 11 > Class 11 Physics (Part Ii) Chapter 17 Waves – Quiz 43 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 11 Physics (Part Ii) Chapter 17 Waves Quiz 43 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. An electromagnetic wave is different than a mechanical wave in that an electromagnetic wave ..... (unlike a mechanical wave). A) Can propagate through a region void of matter. B) Has a non-measurable speed. C) Can travel through a variety of media. D) Has a constant speed when traveling through any medium. Show Answer Correct Answer: A) Can propagate through a region void of matter. 2. What is the speed of a wave that has a wavelength of 2 meters and a frequency of 100 Hz? A) 50 m/s. B) 200 m/s. C) 100 m/s. D) 20 m/s. Show Answer Correct Answer: B) 200 m/s. 3. Which type of radio waves is reflected off the ionosphere? A) Long-wave. B) Short-wave. C) All the above. D) None of the above. Show Answer Correct Answer: B) Short-wave. 4. To find the ..... of a wave, measure the distance from one trough to the next trough. A) Amplitude. B) Wavelength. C) Frequency. D) Interference. Show Answer Correct Answer: B) Wavelength. 5. Bending of waves around an object (such as through a doorway) A) Sound. B) Diffract. C) Pitch. D) Volume. Show Answer Correct Answer: B) Diffract. 6. What is the method to investigate the speed of sound in air using the echo method? A) Shine light through a glass block and measure the angles of refraction. B) Create interference patterns using a microphone and an oscilloscope. C) Blow air into a tube and measure the frequency of the sound produced. D) Strike two blocks together and measure the time taken for the sound to travel a distance. Show Answer Correct Answer: D) Strike two blocks together and measure the time taken for the sound to travel a distance. 7. Assume that waves are propagating in a uniform medium. If the frequency of the wave source doubles then A) The wavelength of the waves halves. B) The wavelength of the waves doubles. C) The speed of the waves halves. D) The speed of the waves doubles. Show Answer Correct Answer: A) The wavelength of the waves halves. 8. As a wave's frequency increases its speed also increases A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: B) False. 9. Which of the following sets of velocity and wavelength is correct about a sound wave that travels from a warmer lower level to a cooler higher level? A) Wavelength:Decreases, Velocity:Decreases. B) Wavelength:Increases, Velocity:Increases. C) Wavelength:Decreases, Velocity:Increases. D) Wavelength:Increases, Velocity:Decreases. Show Answer Correct Answer: A) Wavelength:Decreases, Velocity:Decreases. 10. What is visible light? A) The colors we see when we close our eyes. B) The light human eyes can see. C) When you turn on the light switch. D) None of the above. Show Answer Correct Answer: B) The light human eyes can see. 11. Sound waves have the best quality when traveling through a ..... A) Solid. B) Liquid. C) Gas. D) Tornado. Show Answer Correct Answer: C) Gas. 12. As the tension of a string or coil decreases, the wavelength of the string or coil will ..... A) Get longer. B) Get shorter. C) Harmonize. D) Remain the same. Show Answer Correct Answer: A) Get longer. 13. Define "medium" and provide examples of different types. A) Substance through which a wave travels; air, water, and solids. B) Distance traveled by a wave; meters, kilometers, etc. C) Number of cycles per second; Hertz (Hz). D) Height of a wave; amplitude. Show Answer Correct Answer: A) Substance through which a wave travels; air, water, and solids. 14. What kind of waves do cellular telephones use to transmit and receive signals? A) Gamma Rays. B) Microwaves. C) Ultraviolet Rays. D) Infrared Rays. Show Answer Correct Answer: B) Microwaves. 15. What is the relationship between the frequency and energy of electromagnetic waves? A) They are inversely proportional. B) They are directly proportional. C) They are unrelated. D) Frequency affects amplitude, not energy. Show Answer Correct Answer: B) They are directly proportional. 16. What causes a sound to begin? A) Spinning. B) Shifting. C) Bending. D) Vibrating. Show Answer Correct Answer: D) Vibrating. 17. ..... affects how fast or slow sound waves travel. A) Temperature. B) Speed. C) Amplitude. D) Frequency. Show Answer Correct Answer: A) Temperature. 18. Frieda the fly flaps its wings back and forth 121 times each second. The period of the wing flapping is A) 0.008 Hz. B) 0.008 s. C) 121 Hz. D) 121 s. Show Answer Correct Answer: B) 0.008 s. 19. In a physics lab, a wave is created with a speed of 11.49 m/s. The length of the rope is 1.76 meters and the measurements are made for the 5th harmonic. What is the period? A) 0.15s. B) 6.53 s. C) 0.61 s. D) 1.63 s. Show Answer Correct Answer: C) 0.61 s. 20. Which of the following is not a property of all waves? A) Echoes. B) Refraction. C) The Doppler effect. D) Polarisation. Show Answer Correct Answer: D) Polarisation. 21. What letter represents wavelength? A) Lambda. B) A. C) S. D) X. Show Answer Correct Answer: A) Lambda. 22. The material through which a wave travels A) Mechanical Wave. B) Medium. C) Crest. D) Trough. Show Answer Correct Answer: B) Medium. 23. An airplane that goes so fast that heat starts to become a critical factor A) Subsonic. B) Transonic. C) Supersonic. D) Hypersonic. Show Answer Correct Answer: D) Hypersonic. 24. What does a wave carry? A) Empty space. B) Matter. C) Energy. D) Water. Show Answer Correct Answer: C) Energy. 25. The number of cycles produced per unit time. A) Amplitude. B) Wave speed. C) Frequency. D) Wavelength. Show Answer Correct Answer: C) Frequency. ← 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