This quiz works best with JavaScript enabled. Home > Class 11 > Class 11 Physics (Part Ii) Chapter 17 Waves – Quiz 48 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 11 Physics (Part Ii) Chapter 17 Waves Quiz 48 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Which of these waves do NOT require a medium? A) Ocean waves. B) Seismic waves. C) Radio waves. D) Sound waves. Show Answer Correct Answer: C) Radio waves. 2. What component in a phone helps to produce sound? A) Diaphragm. B) Battery. C) Antenna. D) Screen. Show Answer Correct Answer: A) Diaphragm. 3. What is the amplitude of a wave related to? A) Velocity. B) Speed. C) Mass. D) Height. Show Answer Correct Answer: D) Height. 4. Mirage is an application of ..... A) Refraction. B) Reflection. C) Critical angle. D) Total internal reflection. Show Answer Correct Answer: D) Total internal reflection. 5. What is the speed of sound? A) 760 miles per hour. B) 1220 miles per hour. C) 1337 miles per hour. D) None of the above. Show Answer Correct Answer: A) 760 miles per hour. 6. Critically evaluate the claim: "In a vacuum, all waves travel at the same speed." Use mathematical evidence and scientific reasoning in your response. A) Agree, as all waves are the same. B) Disagree, as different waves have different speeds. C) Agree, as vacuum eliminates medium-dependent variations. D) Disagree, as vacuum impedes wave propagation. Show Answer Correct Answer: C) Agree, as vacuum eliminates medium-dependent variations. 7. How do incandescent bulbs produce light? A) Incandescent bulbs produce light by heating a filament until it glows. B) Incandescent bulbs generate light by using LED technology. C) Incandescent bulbs create light by emitting ultraviolet radiation. D) Incandescent bulbs produce light through chemical reactions. Show Answer Correct Answer: A) Incandescent bulbs produce light by heating a filament until it glows. 8. What is the height of the wave called? A) Volume. B) Longitudinal Wave. C) Amplitude. D) Wavelength. Show Answer Correct Answer: C) Amplitude. 9. If a wave has a $\lambda$ $f=$ A) 0.4 m/sec. B) 14 m/sec. C) 40 m/sec. D) 60 m/sec. Show Answer Correct Answer: C) 40 m/sec. 10. Which of the following statements about waves is false? A) Waves have mass. B) Waves cannot travel through empty space (a vacuum). C) Waves are traveling energy. D) Waves can move through most materials. Show Answer Correct Answer: A) Waves have mass. 11. A pulse travels from a more dense medium to a less dense medium. Which is true? A) The wave increases in speed and wavelength; and inverts. B) The wave decreases in speed and wavelength; and remains upright. C) The wave increases in speed and decreases in wavelength; and inverts. D) The wave increases in speed and decreases in wavelength and remains upright. Show Answer Correct Answer: A) The wave increases in speed and wavelength; and inverts. 12. What do we call sound waves above 20, 000 Hz? A) Ultrasound. B) Infrasound. C) Loud sounds. D) Quiet sounds. Show Answer Correct Answer: A) Ultrasound. 13. Which of the following statements about waves is true A) Only transverse waves undergo reflection. B) Longitudinal waves do not undergo refraction, but may be reflected. C) Diffraction can only take place with light waves. D) All waves undergo reflection, refraction and diffraction. Show Answer Correct Answer: D) All waves undergo reflection, refraction and diffraction. 14. Which seismic wave can travel through the earth's core? A) S wave. B) P wave. C) All the above. D) None of the above. Show Answer Correct Answer: B) P wave. 15. Which statement is true about simple harmonic motion? A) There is minimum displacement. B) Mechanical energy is conserved. C) We are not usually interested in the restoring force. D) The acceleration of the oscillating object does not change. Show Answer Correct Answer: B) Mechanical energy is conserved. 16. Which of these is a type of longitudinal A) Ultrasound. B) X-ray. C) Infa-red. D) Light. Show Answer Correct Answer: A) Ultrasound. 17. What happens when a wave bounces back after hitting a barrier? A) Refraction. B) Diffraction. C) Reflection. D) Absorption. Show Answer Correct Answer: C) Reflection. 18. The number of wavelengths that pass a fixed point each second is known as ..... A) Hertz. B) Amplitude. C) Frequency. D) None of the above. Show Answer Correct Answer: C) Frequency. 19. Rainbows are ..... light. A) Refracting. B) Reflecting. C) Diffracting. D) Absorbing. Show Answer Correct Answer: A) Refracting. 20. The frequence f of a wave is: A) The highest point of the wave. B) The lowest point of the wave. C) The distance between two successive crests. D) The number of waves in one second:. Show Answer Correct Answer: D) The number of waves in one second:. 21. Ionizing radiation that can cause mutations is found in: A) Radio waves. B) Microwaves. C) X-rays. D) Visible light. Show Answer Correct Answer: C) X-rays. 22. What is the term for the change in direction of a wave at an interface between two different media, caused by its change in speed? A) Refraction. B) Reflection. C) Diffraction. D) Absorption. Show Answer Correct Answer: A) Refraction. 23. Which of the following best describes diffraction? A) The bending of waves around obstacles. B) The change in direction of waves when they pass from one medium to another. C) The spreading of waves when they pass through a small gap. D) The absorption of waves by a medium. Show Answer Correct Answer: C) The spreading of waves when they pass through a small gap. 24. Is all radiation dangerous? A) Yes. B) No. C) All the above. D) None of the above. Show Answer Correct Answer: B) No. 25. For lightwaves, the wavelength represents the A) Brightness. B) Colour. C) Speed. D) Angle. Show Answer Correct Answer: B) Colour. ← 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