This quiz works best with JavaScript enabled. Home > Class 11 > Class 11 Physics (Part Ii) Chapter 17 Waves – Quiz 45 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 11 Physics (Part Ii) Chapter 17 Waves Quiz 45 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. A mechanical wave can be either a ..... wave or a ..... wave. A) Tsunami; tidal. B) Hello; goodbye. C) Permanent; temporary. D) Transverse; longitudinal. Show Answer Correct Answer: D) Transverse; longitudinal. 2. Explain the concept of reflection of waves. A) Reflection of waves is the bending of waves when they pass through a medium. B) Reflection of waves is the absorption of waves by a boundary. C) Reflection of waves is the bouncing back of a wave when it hits a boundary, with the angle of incidence being equal to the angle of reflection. D) Reflection of waves is the speeding up of waves when they hit a boundary. Show Answer Correct Answer: C) Reflection of waves is the bouncing back of a wave when it hits a boundary, with the angle of incidence being equal to the angle of reflection. 3. Traveling Waves are waves that go from one place to another. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 4. What do you call bouncing back of a wave when it meets a surface or boundary that does not absorb the entire wave's energy. A) Transmission. B) Refraction. C) Reflection. D) Absorption. Show Answer Correct Answer: C) Reflection. 5. Remember velocity can be found using the formula velocity=frequency x wavelength. What is the velocity of a wave if the wavelength is 2.5 m and the frequency is .4 Hz? A) 1 MHz. B) 10 m/s. C) 1 m/s. D) 100 m/s. Show Answer Correct Answer: C) 1 m/s. 6. When a crest and a trough interfere, what occurs? A) They combine to create a higher amplitude wave. B) They interact to create a smaller amplitude wave. C) The wave changes into a longitudinal wave. D) None of the above. Show Answer Correct Answer: B) They interact to create a smaller amplitude wave. 7. Types of waves A) Mechanical and Electromagnetic. B) Kinetic and potential. C) Kinematics and Dynamics. D) None of the above. Show Answer Correct Answer: A) Mechanical and Electromagnetic. 8. A Repeated disturbance that carries energy through matter or space A) Crest. B) Energy. C) Wave. D) Trough. Show Answer Correct Answer: C) Wave. 9. What happens to the wave speed (v) of a guitar string when it is loosened without changing its length? A) Less than Initial. B) Same as Initial. C) Greater than Initial. D) Cannot be determined from the information provided. Show Answer Correct Answer: A) Less than Initial. 10. It occurs when the waves are taken up or enter by a material. A) Absorption. B) Transmission. C) Refraction. D) Diffraction. Show Answer Correct Answer: A) Absorption. 11. What happens when a wave spreads out after passing through a narrow opening? A) Refraction. B) Diffraction. C) Reflection. D) Absorption. Show Answer Correct Answer: B) Diffraction. 12. Hot drinks cool down quicker in black cups than white ones because: A) White is a good absorber and poor emitter of radiation. B) Black is a good absorber and emitter of radiation. C) Black is a good absorber and poor emitter of radiation. D) White is a good absorber and emitter of radiation. Show Answer Correct Answer: B) Black is a good absorber and emitter of radiation. 13. The number of wave cycles in a unit of time is the ..... A) Wave Speed. B) Frequency. C) Wavelength. D) Amplitude. E) Period. Show Answer Correct Answer: B) Frequency. 14. The bouncing back of a wave when it hits a surface that it cannot pass through is called ..... A) Resonance. B) Diffraction. C) Refraction. D) Reflection. Show Answer Correct Answer: D) Reflection. 15. When salt is placed on a speaker, what causes the salt to move up and down? A) The air particles. B) The amplitude. C) The vibrations of the speaker. D) None of the above. Show Answer Correct Answer: C) The vibrations of the speaker. 16. A transverse wave: A) Is the same as a longitudinal wave. B) Moves the medium parallel to the direction the wave travels. C) Moves the medium perpendicular to the direction the wave travels. D) Carries matter. Show Answer Correct Answer: C) Moves the medium perpendicular to the direction the wave travels. 17. Which two animals use echolocation? A) Bats and humans. B) Bats and dolphins. C) Dolphins and humans. D) Dolphins and butterflies. Show Answer Correct Answer: B) Bats and dolphins. 18. If the period of an oscillation is 5 seconds, its frequency is: A) 5 Hz. B) 0.2 Hz. C) 5 s. D) 0.2 s. Show Answer Correct Answer: B) 0.2 Hz. 19. The narrower the gap, the ..... the diffracted waves are spread out. A) More. B) Less. C) All the above. D) None of the above. Show Answer Correct Answer: A) More. 20. What is the phenomenon called when light bounces off a surface? A) Absorption. B) Diffraction. C) Reflection. D) Refraction. Show Answer Correct Answer: C) Reflection. 21. A wave has a frequency of 540 Hz and is traveling at 340 m/s. What is its wavelength? A) 1.59 m. B) 0.63 m. C) 183600 m. D) 91800 m. Show Answer Correct Answer: B) 0.63 m. 22. A wave is: A) An oscillation that travels from one place to another. B) A frequency that is resonant with a periodic force. C) A system in steady harmonic motion. D) An unstable oscillation that rapidly decays to zero amplitude. Show Answer Correct Answer: A) An oscillation that travels from one place to another. 23. A wave has a frequency of 14 Hz and a wavelength of 3 m. At what speed will this wave travel? A) 42 m/s. B) 42 m. C) 4.67 m/s. D) 4.67 Hz. Show Answer Correct Answer: A) 42 m/s. 24. The two types of mechanical waves are ..... and ..... A) Rarefraction, Compression. B) Longitudinal, Transverse. C) Light, Sound. D) Force, Vibration. Show Answer Correct Answer: B) Longitudinal, Transverse. 25. Which is the correct equation for calculating the speed of a wave? A) T = 1/f. B) Speed= Wavelength x Period. C) Speed = Wavelength/Frequency. D) Speed= Wavelength x Frequency. Show Answer Correct Answer: D) Speed= Wavelength x 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