This quiz works best with JavaScript enabled. Home > Class 11 > Class 11 Physics (Part Ii) Chapter 17 Waves – Quiz 14 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 11 Physics (Part Ii) Chapter 17 Waves Quiz 14 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. The frequency of sound waves determine A) Quality. B) Type of interference. C) Pitch. D) Loudness. Show Answer Correct Answer: C) Pitch. 2. As Physics Standing Waves A) The frequency of the wave. B) The amplitude of the wave. C) The wavelength of the wave. D) The speed of the wave. Show Answer Correct Answer: A) The frequency of the wave. 3. The sound heard when a piano key is hit is caused by A) Vibration. B) Refraction. C) Momentum. D) Acceleration. Show Answer Correct Answer: A) Vibration. 4. Which type of electromagnetic wave has the greatest frequency? A) Radio waves. B) Infrared. C) Gamma rays. D) Microwaves. Show Answer Correct Answer: C) Gamma rays. 5. Which electromagnetic wave possesses the least energy? A) Microwave. B) Radio wave. C) Infrared. D) Gamma ray. Show Answer Correct Answer: B) Radio wave. 6. When two or more sound waves meet, they can A) Interfere. B) Refract. C) Diffract. D) Reflect. Show Answer Correct Answer: A) Interfere. 7. One beam of coherent light travels path P$_{1}$ in arriving at point Q and another coherent beam travels path P$_{2}$ in arriving at the same point. If these two beams are to interfere destructively, the path difference P$_{1}$-P$_{2}$ must be equal to A) An odd number of half-wavelengths. B) Zero. C) A whole number of wavelengths. D) A whole number of half-wavelengths. Show Answer Correct Answer: A) An odd number of half-wavelengths. 8. The smaller the wavelength the ..... the energy A) Lower. B) Higher. C) All the above. D) None of the above. Show Answer Correct Answer: B) Higher. 9. Damping is the speeding up of periodic motion due to friction. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: B) False. 10. What effect describes the change in pitch due to movement of the sound source? A) Reflection effect. B) Refraction effect. C) Doppler effect. D) Diffraction effect. Show Answer Correct Answer: C) Doppler effect. 11. How is an electromagnetic wave different from a mechanical wave? A) An electromagnetic wave travels slower than a mechanical wave. B) An electromagnetic wave has a larger amplitude than a mechanical wave. C) An electromagnetic wave can travel through a vacuum, but a mechanical wave cannot. D) An electromagnetic wave has no wavelength, but a mechanical wave has a wavelength. Show Answer Correct Answer: C) An electromagnetic wave can travel through a vacuum, but a mechanical wave cannot. 12. The vibrations in a longitudinal wave are ..... to the direction of energy transfer. A) Parallel. B) Perpendicular. C) Up and Down. D) Backwards. Show Answer Correct Answer: A) Parallel. 13. As the wavelength of light increases A) The frequency increases. B) The speed of light increases. C) The energy decreases. D) The intensity increases. Show Answer Correct Answer: C) The energy decreases. 14. What type of image does a concave lens produce? A) Real image. B) Virtual image. C) Enlarged image. D) Inverted image. Show Answer Correct Answer: B) Virtual image. 15. What is radiant energy? A) Energy from the earth. B) Energy from heat. C) Energy given off by the sun. D) Energy from ocean waves. Show Answer Correct Answer: C) Energy given off by the sun. 16. The periodic time T 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 time of one wavelength. Show Answer Correct Answer: D) The time of one wavelength. 17. The maximum displacement of an element from its normal position A) Amplitude $\left(A\right)$. B) Wavelength $\left(\lambda\right)$. C) Periodo $\left(T\right)$. D) Crest of the wave. Show Answer Correct Answer: A) Amplitude $\left(A\right)$. 18. Which of these is an example of a transverse mechanical wave? A) Sound. B) Radio waves. C) A vibrating guitar string. D) Pressure waves. Show Answer Correct Answer: C) A vibrating guitar string. 19. Which of the following statements would be true?I A note of frequency 512 Hz has a higher pitch than one of frequency 256 HzII A high pitched note travels faster than a low pitched noteIII If the pitch of a note is increased then the periodic time of the vibrations is also increased A) I only. B) I and II only. C) I and III only. D) II and III only. Show Answer Correct Answer: A) I only. 20. Which type of wave has to have mass in order to travel? A) Electromagnetic. B) Mechanical. C) Both Electromagnetic and Mechanical. D) None of the above. Show Answer Correct Answer: B) Mechanical. 21. Which of the following is NOT a characteristic of mechanical waves? A) They require a medium to travel. B) They can travel through a vacuum. C) They include seismic waves. D) They involve the collision of molecules in the medium. Show Answer Correct Answer: B) They can travel through a vacuum. 22. A harmonic motion has a frequency of 8 Hz. What is the period of the wave? A) 16 sec. B) 2 m. C) 0.5 sec. D) 0.125 sec. Show Answer Correct Answer: D) 0.125 sec. 23. What is amplitude? A) The height of a waveform. B) How far apart the peaks of a waveform are. C) How many waveforms there are. D) None of the above. Show Answer Correct Answer: A) The height of a waveform. 24. In any periodic motion, the amount of time required for an object to repeat one complete cycle of motion A) Period. B) Periodic wave. C) Periodic motion. D) None of the above. Show Answer Correct Answer: A) Period. 25. What is the purpose of using an instrument tuner when investigating the frequency of a sound wave? A) To change the frequency of the wave. B) To increase the amplitude of the wave. C) To create interference patterns. D) To check the accuracy of the measurement. Show Answer Correct Answer: D) To check the accuracy of the measurement. ← 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