This quiz works best with JavaScript enabled. Home > Class 11 > Class 11 Physics (Part Ii) Chapter 17 Waves – Quiz 13 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 11 Physics (Part Ii) Chapter 17 Waves Quiz 13 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. In a wave experiment, if the time taken for 10 waves to pass a point is 5 seconds, what is the frequency of the wave? A) 0.5 Hz. B) 2 Hz. C) 5 Hz. D) 10 Hz. Show Answer Correct Answer: B) 2 Hz. 2. What do we call the top of the wave? A) Crest. B) Trough. C) Amplitude. D) Frequency. Show Answer Correct Answer: A) Crest. 3. What is the unit for frequency? A) Hz. B) M. C) J. D) M/s. Show Answer Correct Answer: A) Hz. 4. Which of the following could NOT be demonstrated with a single wave pulse. A) Standing Wave. B) Diffraction. C) Reflection. D) Propagation. Show Answer Correct Answer: A) Standing Wave. 5. What unit is used to measure the loudness of sounds? A) Joules. B) Watts. C) Hertz. D) Decibels. Show Answer Correct Answer: D) Decibels. 6. What is the relationship between the frequency (f) and the period (T) of a wave? A) $f = \frac{1}{T}$. B) $f = T$. C) $f = 2T$. D) $f = \frac{T}{2}$. Show Answer Correct Answer: A) $f = \frac{1}{T}$. 7. What is the speed of a wave with a frequency of 20Hz and a wavelength of 0.4m? A) 100m/s. B) 25m/s. C) 8m/s. D) None of the above. Show Answer Correct Answer: C) 8m/s. 8. A sailor measures 5 waves passing her boat in 10 seconds. Each wave has a wavelength of 2 m. What is the speed of the wave? A) 1 m/s. B) 10 m/s. C) 4 m/s. D) 0.5 m/s. Show Answer Correct Answer: A) 1 m/s. 9. Develop a mathematical model predicting the speed of light waves in a specific medium. Justify your model's validity using scientific principles. A) Speed = Frequency x Wavelength; based on wave properties. B) Speed = Amplitude / Frequency; based on mathematical symmetry. C) Speed = Wavelength x Amplitude; based on trial and error. D) Speed = Wavelength-Frequency; based on common knowledge. Show Answer Correct Answer: A) Speed = Frequency x Wavelength; based on wave properties. 10. A longitudinal wave carries energy ..... to the direction the medium is moving. A) At a 90 degree angle. B) Perpendicular. C) Parallel. D) At a 45 degree angle. Show Answer Correct Answer: C) Parallel. 11. A physics student notices that 4.0 waves arrive at the beach every 20. seconds. The frequency of these waves is A) 0.20 Hz. B) 5.0 Hz. C) 16 Hz. D) 80 Hz. Show Answer Correct Answer: B) 5.0 Hz. 12. What must you do to increase the energy of a wave? A) Increase the potential energy put into making the wave. B) Decrease the amount of potential energy put into making the wave. C) Create a different type of wave. D) Energy is constant in a wave and cannot be increased. Show Answer Correct Answer: A) Increase the potential energy put into making the wave. 13. Part of a standing wave that does not move A) Node. B) Antinode. C) Crest. D) Trough. Show Answer Correct Answer: A) Node. 14. What type of interference occurs when two waves cancel each other out? A) Transverse interference. B) Destructive interference. C) Longitudinal interference. D) Constructive interference. Show Answer Correct Answer: B) Destructive interference. 15. The longer the ..... the ..... the frequency. A) Wavelength, lower. B) Wavelength, higher. C) Amplitude, lower. D) Amplitude, higher. Show Answer Correct Answer: A) Wavelength, lower. 16. What type of energy is in food and coal? A) Chemical energy. B) Kinetic energy. C) Electrical energy. D) Electromagnetic energy. Show Answer Correct Answer: A) Chemical energy. 17. What can a diffraction grating be used to measure? A) The energy of light. B) The speed of light. C) The wavelength of light. D) The amplitude of light. Show Answer Correct Answer: C) The wavelength of light. 18. An explosion causes the emission of the following types of radiationI LightII SoundIII Infra-redWhich of these will be received first by a person some distance away from the source? A) I and II only. B) I and III only. C) II and III only. D) I, II and III. Show Answer Correct Answer: B) I and III only. 19. Which wave type has particles moving perpendicular to wave travel? A) Longitudinal waves. B) Transverse waves. C) Gravitational waves. D) Electromagnetic waves. Show Answer Correct Answer: B) Transverse waves. 20. Which type of wave as oscillations that are parallel to the direction of energy transfer? A) Transverse. B) Light. C) Longitudinal. D) S-Wave. Show Answer Correct Answer: C) Longitudinal. 21. If frequency is increased then the period is ..... A) Increased. B) Decreased. C) Stays the same. D) None of the above. Show Answer Correct Answer: B) Decreased. 22. Which of the following determines the pitch of a sound wave? A) Frequency. B) Density. C) Mass. D) Reflection. Show Answer Correct Answer: A) Frequency. 23. A girl is sitting on a rock in the sea looking at the passing waves. She notices that five complete wavelengths pass her in 20 s. What is the frequency of this wave? A) 0.25 Hz. B) 4.0 Hz. C) 15 Hz. D) 100 Hz. Show Answer Correct Answer: A) 0.25 Hz. 24. Wave that do not require a medium are called ..... A) Electromagnetic wave. B) Transverse wave. C) Sound wave. D) Compression wave. Show Answer Correct Answer: A) Electromagnetic wave. 25. What is the purpose of noise-canceling headphones? A) To cancel out sound waves. B) To amplify sound waves. C) To create destructive interference. D) To increase the intensity of sound waves. Show Answer Correct Answer: A) To cancel out sound waves. ← 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