This quiz works best with JavaScript enabled. Home > Class 11 > Class 11 Physics (Part Ii) Chapter 17 Waves – Quiz 42 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 11 Physics (Part Ii) Chapter 17 Waves Quiz 42 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. How many wavelengths are created in a closed-closed tube vibrating at its 3rd harmonic? A) 1/2. B) 1. C) 3/2. D) 2. Show Answer Correct Answer: C) 3/2. 2. ..... occurs when two waves combine to form a new wave. A) Compression. B) Reflection. C) Resonance. D) Interference. Show Answer Correct Answer: D) Interference. 3. Sound is an example of which type of wave? A) Transverse. B) Longitudinal. C) Both. D) Neither. Show Answer Correct Answer: B) Longitudinal. 4. What is the de Broglie wavelength of a person of mass 60kg moving at a speed of 2ms$^{-1}$? A) 7.95 x 10$^{-32}$m. B) 5.52 x 10$^{-36}$m. C) 3.68 x 10$^{-44}$m. D) 1.58 x 10$^{42}$m. Show Answer Correct Answer: B) 5.52 x 10$^{-36}$m. 5. Sound waves are also called ..... because they move side to side. A) Tidal Waves. B) Transverse Waves. C) Amplitude Waves. D) Longitudinal Waves. Show Answer Correct Answer: D) Longitudinal Waves. 6. The disturbance of a wave travels farther than its medium. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 7. It is the apparent change in frequency (or wavelength) that occurs because of motion of the source or observer of a wave A) Waves fronts. B) Transmission. C) Frequency Effect. D) None. Show Answer Correct Answer: D) None. 8. What does a progressive wave do? A) Transfers energy from one place to another. B) Stops energy transfer. C) Creates energy. D) Stores energy. Show Answer Correct Answer: A) Transfers energy from one place to another. 9. Low frequency A) If you lower the frequency, the pitch becomes lower or deeper. B) If you increase the frequency, the pitch becomes higher. C) Frequency has no effect on pitch. D) Lower frequency results in a faster sound wave. Show Answer Correct Answer: A) If you lower the frequency, the pitch becomes lower or deeper. 10. You can calculate the speed of a wave by dividing the wavelength ..... A) Frequency. B) Period. C) Lambda. D) Time. Show Answer Correct Answer: B) Period. 11. What happens when a wave bends as it passes through a different medium? A) Diffraction. B) Absorption. C) Refraction. D) Reflection. Show Answer Correct Answer: C) Refraction. 12. Whenever there is complete destructive interference between two coherent wave trains, the waves must be A) In phase. B) Out of phase by half of a wavelength. C) Out of phase by one wavelength. D) Out of phase by a quarter of a wavelength. Show Answer Correct Answer: B) Out of phase by half of a wavelength. 13. It is the highest point of a wave. A) Trough. B) Crest. C) Amplitude. D) Wavelength. Show Answer Correct Answer: B) Crest. 14. Waves A) A type of solid material. B) A repeating disturbance that travels through matter, transferring energy. C) A phenomenon that only occurs in liquids. D) A static force that does not move. Show Answer Correct Answer: B) A repeating disturbance that travels through matter, transferring energy. 15. If a wave is traveling at 60m/s and has a wavelength of 3m. What is the frequency? A) 10Hz. B) 20Hz. C) 180Hz. D) None of the above. Show Answer Correct Answer: B) 20Hz. 16. An airplane that goes slower than the speed of sound A) Subsonic. B) Supersonic. C) Hypersonic. D) None of the above. Show Answer Correct Answer: A) Subsonic. 17. The properties that waves have that determine their behaviour are: A) Frequency, period, wavelength, and amplitude. B) Frequency and amplitude. C) Period and wavelength. D) Frequency. Show Answer Correct Answer: A) Frequency, period, wavelength, and amplitude. 18. What occurs when light rays deviate from their original path upon striking an obstacle? A) Radiation. B) Scattering. C) Reflection. D) Refraction. Show Answer Correct Answer: B) Scattering. 19. What is the point on the Earth's surface directly above the focus of an earthquake? A) Epicenter. B) Fault. C) Hypocenter. D) Tremor. Show Answer Correct Answer: A) Epicenter. 20. Waves transfer (a) A) Matter. B) Molecules. C) A. Energy. D) Atoms. Show Answer Correct Answer: C) A. Energy. 21. What happens to the pitch of a sound wave when the frequency increases? A) The pitch decreases. B) The pitch remains the same. C) The pitch increases. D) The pitch becomes softer. Show Answer Correct Answer: C) The pitch increases. 22. Which of the following would have the highest amplitude? A) A dog barking. B) Clapping your hands. C) Knocking on a door. D) Thunder. Show Answer Correct Answer: D) Thunder. 23. What does the amplitude of a pendulum measure? A) The distance from the top of the string to the mass at the end of the pendulum. B) Where the force of gravity takes affect. C) How fast the pendulum moves back and forth. D) The distance from the highest point to the equilibrium point. Show Answer Correct Answer: D) The distance from the highest point to the equilibrium point. 24. What is DIFFRACTION? A) Diffraction occurs when waves pass through a gap or around an object. B) Diffraction occurs when a wave bounces back. C) Diffraction occurs when it looks into the mirror and smiles. D) Diffraction occurs when a wave is distracted and moves randomly. Show Answer Correct Answer: A) Diffraction occurs when waves pass through a gap or around an object. 25. The energy of a sound wave is proportional to the square of its A) Frequency. B) Amplitude. C) Wavelength. D) Speed. Show Answer Correct Answer: B) Amplitude. ← 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