This quiz works best with JavaScript enabled. Home > Class 11 > Class 11 Physics (Part Ii) Chapter 17 Waves – Quiz 41 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 11 Physics (Part Ii) Chapter 17 Waves Quiz 41 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Which phenomenon occurs when two waves traveling in the same direction overlap and their crests combine to produce a larger wave? A) Destructive interference. B) Refraction. C) Constructive interference. D) Diffraction. Show Answer Correct Answer: C) Constructive interference. 2. How to get period per swing A) T divide the amount of swings u did. B) Multiply the number of swings by T. C) Add T to the total swings. D) Subtract the swings from T. Show Answer Correct Answer: A) T divide the amount of swings u did. 3. Explain how increasing the frequency of a wave affects its energy. A) Energy decreases. B) Energy remains constant. C) Energy increases. D) Energy becomes random. Show Answer Correct Answer: C) Energy increases. 4. Which part of the electromagnectic spectrum is necessary for the sense of sight in humans? A) Radio waves. B) Gamma rays. C) Infrared light. D) Visible light. Show Answer Correct Answer: D) Visible light. 5. The human audible frequency range is approximately: A) 1 Hz to 10 Hz. B) 10 Hz to 100 Hz. C) 20 Hz to 20, 000 Hz. D) 50 Hz to 50, 000 Hz. Show Answer Correct Answer: C) 20 Hz to 20, 000 Hz. 6. Light of wavelength 500 nm is incident on a metalwith work function 2.28 eV. The de Brogliewavelength of the emitted electron is:- A) $\le2.8\times10^{-12}m$. B) $<2.8\times10^{-12}m$. C) $<2.8\times10^{-9}m$. D) $\ge2.8\times10^{-9}m$. Show Answer Correct Answer: D) $\ge2.8\times10^{-9}m$. 7. What is the speed of a wave dependent on? A) The wavelength of the wave. B) The frequency of the wave. C) The amplitude of the wave. D) The medium through which the wave is traveling. Show Answer Correct Answer: D) The medium through which the wave is traveling. 8. A medium is the substance a wave travels through A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 9. Sound has to travel through a A) Crest. B) Medium. C) Frequency. D) Box. Show Answer Correct Answer: B) Medium. 10. What is the frequency of a wave that has a wavelength of 2.5m traveling at a speed of 750m/s A) 300 Hz. B) 0.0033 Hz. C) 1, 875 Hz. D) 747.5 Hz. Show Answer Correct Answer: A) 300 Hz. 11. Which type of wave is fastest? A) Sound in air. B) Light. C) Water. D) Sound in water. Show Answer Correct Answer: B) Light. 12. The matter (solid, liquid, or gas) through which waves can travel A) Medium. B) Object. C) Transverse Wave. D) Wavelength. Show Answer Correct Answer: A) Medium. 13. How does the speed of light change when it enters a denser medium? A) The speed of light decreases when it enters a denser medium. B) The speed of light increases when it enters a denser medium. C) The speed of light becomes infinite in a denser medium. D) The speed of light remains constant regardless of the medium. Show Answer Correct Answer: A) The speed of light decreases when it enters a denser medium. 14. Which of these properties allows you to see the moon at night, see yourself in a mirror and hear an echo A) Reflection. B) Refraction. C) Diffraction. D) Interference. Show Answer Correct Answer: A) Reflection. 15. Which of the following is a true statement concerning the relationship between the wavelength and the frequency? A) Increasing the frequency will increase the wavelength. B) Increasing the frequency will have no effect on the wavelength. C) The frequency and the wavelength will always remain constant. D) Increasing the frequency will decrease the wavelength. Show Answer Correct Answer: D) Increasing the frequency will decrease the wavelength. 16. Which is not an example of a damping force? A) Inertia. B) Viscosity. C) Friction. D) Air resistance. Show Answer Correct Answer: A) Inertia. 17. What is the wavelength of a sound wave? A) The wavelength of a sound wave depends on its frequency and the speed of sound in the medium. B) Wavelength is only determined by the temperature of the medium. C) Sound waves do not have a wavelength. D) The wavelength of a sound wave is always constant. Show Answer Correct Answer: A) The wavelength of a sound wave depends on its frequency and the speed of sound in the medium. 18. A signal has a frequency of 2.0 MHz.What is the period of the signal? A) 5$\mu$s. B) 200ns. C) 500ns. D) 2$\mu$s. Show Answer Correct Answer: C) 500ns. 19. The ..... of waves can change when the waves move from one medium to another. A) Altitude. B) Amplitude. C) Speed. D) Compression. Show Answer Correct Answer: C) Speed. 20. What does "frequency" measure in a wave? A) Height. B) Speed. C) Cycles per second. D) Distance. Show Answer Correct Answer: C) Cycles per second. 21. Which of the following colors has the longest wavelength? A) Red. B) Orange. C) Blue. D) Violet. Show Answer Correct Answer: A) Red. 22. Please select the choice that correctly identifies the wave characteristic that describes the pitch of a sound and how loud that sound is. A) Pitch:PeriodLoudness:Frequency. B) Pitch:FrequencyLoudness:Amplitude. C) Pitch:AmplitudeLoudness:Frequency. D) Pitch:WavelengthLoudness:Amplitude. Show Answer Correct Answer: B) Pitch:FrequencyLoudness:Amplitude. 23. In which medium is the wavelength of red light the shortest? A) Flint Glass. B) Crown Glass. C) Diamond. D) Zircon. Show Answer Correct Answer: C) Diamond. 24. A simple harmonic oscillator takes 4.8 s to undergo five complete wave cycles. What is the frequency of the wave? A) 1.04 Hz. B) 4.8 Hz. C) 1/4.8 Hz. D) None of the above. Show Answer Correct Answer: A) 1.04 Hz. 25. When light enters a more optically dense medium it refracts ..... A) Towards the normal. B) Away from the normal. C) All the above. D) None of the above. Show Answer Correct Answer: A) Towards the normal. ← 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