This quiz works best with JavaScript enabled. Home > Class 11 > Class 11 Physics (Part Ii) Chapter 17 Waves – Quiz 67 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 11 Physics (Part Ii) Chapter 17 Waves Quiz 67 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. If two objects collide and scatter apart, this is called a ..... collision. A) Inelastic. B) Plastic. C) Fantastic. D) Elastic. Show Answer Correct Answer: D) Elastic. 2. When wavelength increases, what happens to the frequency? A) It increases. B) It decreases. C) It stays the same. D) None of the above. Show Answer Correct Answer: B) It decreases. 3. What type of waves move back and forth like a slinky bounce? A) Transverse waves. B) Longitudinal waves. C) Medium waves. D) Reflecting waves. Show Answer Correct Answer: B) Longitudinal waves. 4. This type of EM radiation is used to send mobile phone signals & in GPS? A) Infrared. B) Visible light. C) Ultraviolet. D) Microwaves. Show Answer Correct Answer: D) Microwaves. 5. Which one has the lowest frequency? A) Radio. B) Light. C) Infared. D) Ultraviolet. Show Answer Correct Answer: A) Radio. 6. Imagine Avery and Hannah are at a science fair demonstrating wave physics. When two waves they created meet and combine to form a wave with a larger amplitude, what is this interaction called? A) Diffraction. B) Refraction. C) Constructive interference. D) Destructive interferenceTagsDOK Level 2:Skill/Concept. Show Answer Correct Answer: C) Constructive interference. 7. Which object would be the best at reflecting light waves? A) Windows. B) Mirrors. C) Notebooks. D) Tables. Show Answer Correct Answer: B) Mirrors. 8. What is the number of waves per unit time called? A) Frequency. B) Wavelength. C) Period. D) Amplitude. Show Answer Correct Answer: A) Frequency. 9. What describes the intensity of a wave? A) Its power divided by the area it covers. B) Its frequency divided by its amplitude. C) Its amplitude divided by its frequency. D) Its speed divided by its wavelength. Show Answer Correct Answer: A) Its power divided by the area it covers. 10. What is the refractive index? A) The refractive index is the ratio of the speed of light in vacuum to the speed of light in a medium. B) The refractive index is the measure of light intensity in a medium. C) The refractive index is the color of light in different materials. D) The refractive index is the angle at which light enters a medium. Show Answer Correct Answer: A) The refractive index is the ratio of the speed of light in vacuum to the speed of light in a medium. 11. Two light wave sources with the same frequency and with a constant phase difference are said to be ..... A) Polarised. B) Diffracted. C) Coherent. D) Longitudinal. Show Answer Correct Answer: C) Coherent. 12. If given particles are moving with same velocity, then maximum de-Broglie wavelength for: A) Proton. B) Neutron. C) Alpha Particle. D) Beta Particle. Show Answer Correct Answer: D) Beta Particle. 13. In the longitudinal waves the molecules of the medium vibrates in a direction ..... the direction of the wave prop A) The same of. B) Make angle 45. C) Perpendicular. D) Opposite. Show Answer Correct Answer: A) The same of. 14. If the amplitude of a wave is increased, the frequency of the wave will A) Decrease. B) Increase. C) Remain the same. D) None of the above. Show Answer Correct Answer: C) Remain the same. 15. The Tacoma Narrows Bridge, musical instruments, and crystal stemware are examples of ..... A) Frequency. B) Resonance. C) Interference. D) Speed. Show Answer Correct Answer: B) Resonance. 16. When analyzing wave data in different media, if the speed of a wave is 350 m/s and the frequency is 200 Hz, what is the wavelength? A) 1.75 m. B) 0.5 m. C) 1.50 m. D) 2.5 m. Show Answer Correct Answer: A) 1.75 m. 17. What is the principle of superposition in wave mechanics? A) The resulting wave is the subtraction of the individual waves' displacements at each point. B) The resulting wave is the sum of the individual waves' displacements at each point. C) Superposition in wave mechanics refers to the interference of waves, not their summation. D) The principle of superposition only applies to mechanical waves, not electromagnetic waves. Show Answer Correct Answer: B) The resulting wave is the sum of the individual waves' displacements at each point. 18. How fast the wave travels along the medium is the ..... A) Wave speed. B) Frequency. C) Wavelength. D) Amplitude. E) Period. Show Answer Correct Answer: A) Wave speed. 19. Which property of waves determines the loudness of a sound? A) Amplitude. B) Frequency. C) Wavelength. D) Velocity. Show Answer Correct Answer: A) Amplitude. 20. Which change will increase the diffraction of the wave as it passes through the gap? A) Increase the amplitude of the wave. B) Increase the width of the gap. C) Reduce the depth of water. D) Reduce the frequency of the wave. Show Answer Correct Answer: D) Reduce the frequency of the wave. 21. If the amplitude increases during interference, this is ..... A) Destructive interference. B) Constructive interference. C) All the above. D) None of the above. Show Answer Correct Answer: B) Constructive interference. 22. What is the angle that needs to be drawn 90$^\circ$ to the surface of the glass block when investigating the refractive index of glass? A) Perpendicular. B) Tangent. C) Parallel. D) Normal. Show Answer Correct Answer: D) Normal. 23. Which of these has the highest frequency? A) Radio. B) Gamma. C) Infrasound. D) Ultrasound at 50, 000 Hz. Show Answer Correct Answer: B) Gamma. 24. How does "speed" relate to the terms "frequency" and "wavelength" ? A) Speed = Frequency x Wavelength. B) Speed = Frequency-Wavelength. C) Speed = Frequency / Wavelength. D) Speed = Frequency + Wavelength. Show Answer Correct Answer: A) Speed = Frequency x Wavelength. 25. If the time taken to make 100 complete oscillation is 2 seconds then the frequency of vibration is ..... A) 100 Hz. B) 0.02 Hz. C) 50 Hz. D) 200 Hz. Show Answer Correct Answer: C) 50 Hz. ← 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