This quiz works best with JavaScript enabled. Home > Class 11 > Class 11 Physics (Part Ii) Chapter 17 Waves – Quiz 49 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 11 Physics (Part Ii) Chapter 17 Waves Quiz 49 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. What kind of wave does not require a medium to travel? A) Mechanical. B) Electromagnetic. C) Longitudinal. D) Seismic. Show Answer Correct Answer: B) Electromagnetic. 2. When an electron absorbs a photon of light, it also ..... A) Gains positive charge. B) Gains negative charge. C) Increases energy level. D) Decreases energy level. Show Answer Correct Answer: C) Increases energy level. 3. We measure the frequency of the wave using this unit: A) Hertz (Hz). B) Metres (m). C) M/s. D) Km. Show Answer Correct Answer: A) Hertz (Hz). 4. What happens when light passes through a convex lens? A) It spreads out. B) It is focused to a point. C) It disappears. D) It changes color. Show Answer Correct Answer: B) It is focused to a point. 5. A 1.5 m string is vibrating at its fundamental frequency of 440 Hz. What is the speed of the standing wave on the string? A) 147 m/s. B) 293 m/s. C) 660 m/s. D) 1320 m/s. Show Answer Correct Answer: D) 1320 m/s. 6. While playing with a slinky, two students make waves on opposite sides of the slinky. They notice that the waves seem to cancel out and disappear for an instant when the waves overlap. This is an example of ..... A) Constructive interference. B) Destructive Interference. C) Constructive diffraction. D) Destructive diffraction. Show Answer Correct Answer: B) Destructive Interference. 7. Describe the motion of particles at an antinode in a standing wave. A) Particles at an antinode in a standing wave have zero amplitude. B) Particles at an antinode in a standing wave remain stationary. C) Particles at an antinode in a standing wave experience minimal displacement. D) Particles at an antinode in a standing wave undergo maximum displacement and experience maximum amplitude. Show Answer Correct Answer: D) Particles at an antinode in a standing wave undergo maximum displacement and experience maximum amplitude. 8. The number of waves created per second is called A) The period. B) The wavelength. C) The frequency. D) The amplitude. Show Answer Correct Answer: C) The frequency. 9. The basic properties of waves are amplitude, frequency, and A) Wavelength. B) Surface. C) Mechanical. D) Temperature. Show Answer Correct Answer: A) Wavelength. 10. What is the significance of the electromagnetic spectrum? A) It is irrelevant to modern technology. B) It only applies to astronomy and space exploration. C) The electromagnetic spectrum is significant for understanding physical phenomena and enabling technologies across various fields. D) It describes only visible light phenomena. Show Answer Correct Answer: C) The electromagnetic spectrum is significant for understanding physical phenomena and enabling technologies across various fields. 11. A wave travels from a less dense medium to a more dense medium. The wavelength of the transmitted wave is ..... the wavelength of the incident wave. A) Greater than. B) Equal to. C) Less than. D) Impossible to tell. Show Answer Correct Answer: C) Less than. 12. Fill in the blank:The ..... of a wave is the number of complete waves passing a point per second. A) Amplitude. B) Frequency. C) Wavelength. D) Velocity. Show Answer Correct Answer: B) Frequency. 13. Which of the following is used to investigate the structure of solids? A) Gamma Rays. B) Infrared Rays. C) X-Rays. D) Cosmic Rays. Show Answer Correct Answer: C) X-Rays. 14. Medium A) A matter which a wave travels. B) A type of wave. C) A measurement of frequency. D) A source of energy. Show Answer Correct Answer: A) A matter which a wave travels. 15. Both sound and light waves can travel through a vacuum. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: B) False. 16. Which of the following waves have a maximum frequency? A) Infrared waves. B) Gamma rays. C) Microwaves. D) Radio waves. Show Answer Correct Answer: B) Gamma rays. 17. What do digital signals turn sounds into? A) Analog signals. B) Interference. C) Continuity. D) Zeros and ones. Show Answer Correct Answer: D) Zeros and ones. 18. What is NOT an example of the doppler effect? A) Siren moving towards you. B) Siren moving away from you. C) A train passes you in the train station. D) You are standing still and play a trumpet. Show Answer Correct Answer: D) You are standing still and play a trumpet. 19. Engineers are designing an auditorium that will be used for performances by orchestras. What must they do to maximize the loudness of the sound heard by the audience? A) Hang curtains behind the orchestra. B) Put carpet all around the walls of the auditorium. C) Hang reflecting panels from the ceiling behind the orchestra. D) Install narrow glass windows and skylights around the top of the walls. Show Answer Correct Answer: C) Hang reflecting panels from the ceiling behind the orchestra. 20. You shine a light on a mirror and the light waves bounce back. Which phenomenon is happening? A) Constructive interference. B) Refraction. C) Reflection. D) Diffraction. Show Answer Correct Answer: C) Reflection. 21. The higher the tension in a string, A) The greater the wavelength. B) The faster the wave moves. C) The slower the wave moves. D) The less energy is transfered. Show Answer Correct Answer: B) The faster the wave moves. 22. By what process is energy transferred when sound waves travel through air? A) Absorption of sound waves by surfaces. B) Vibrations of perpendicular electric and magnetic fields. C) Flow of air currents away from the sound source to the listener. D) Consecutive, repeating collisions or interactions of air particles. Show Answer Correct Answer: D) Consecutive, repeating collisions or interactions of air particles. 23. A wave has frequency of $5Hz$ $25ms^{-1}$ A) $25m$. B) $125m$. C) $5m$. D) $25m/s$. Show Answer Correct Answer: C) $5m$. 24. Which of the following statements best describes the relationship between wavelength and frequency? A) They are inversely proportional. B) They are directly proportional. C) They are unrelated. D) Wavelength is dependent on frequency. Show Answer Correct Answer: A) They are inversely proportional. 25. The normal is ..... A) A dotted line perpendicular to the boundary of a surface. B) A dotted line parallel to the boundary of a surface. C) All the above. D) None of the above. Show Answer Correct Answer: A) A dotted line perpendicular to the boundary of a surface. ← 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