This quiz works best with JavaScript enabled. Home > Class 11 > Class 11 Physics (Part Ii) Chapter 17 Waves – Quiz 34 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 11 Physics (Part Ii) Chapter 17 Waves Quiz 34 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. What is the formula to calculate the frequency of a wave? A) Frequency = Energy / Wavelength. B) Frequency = Speed of the wave / Wavelength. C) Frequency = Velocity x Time. D) Frequency = Amplitude x Time. Show Answer Correct Answer: B) Frequency = Speed of the wave / Wavelength. 2. A tube of length L$_{1}$ is open at both ends. A second tube of length L$_{2}$ is closed at one end and open at the other end. This second tube resonates at the same fundamental frequency as the first tube. What is the value of L$_{2}$? A) 1/2 L$_{1}$. B) L$_{1}$. C) 2 L$_{1}$. D) 4 L$_{1}$. Show Answer Correct Answer: A) 1/2 L$_{1}$. 3. Evaluate the claim: "Waves travel faster in water than in air." If the speed of a wave in water is 1500 m/s and the wavelength is 3 meters, calculate the frequency. Which mathematical relationship should be used? A) Frequency = Speed / Wavelength. B) Frequency = Speed x Wavelength. C) Frequency = Speed-Wavelength. D) Frequency = Wavelength / Speed. Show Answer Correct Answer: A) Frequency = Speed / Wavelength. 4. A wave with a very long wavelength has a ..... A) High frequency. B) Low frequency. C) Large amplitude. D) Short amplitude. Show Answer Correct Answer: B) Low frequency. 5. What is the principle behind LED lights? A) LED lights operate using thermal radiation. B) LED lights emit light through chemical reactions. C) LED lights generate light by incandescent heating. D) LED lights work by electroluminescence in semiconductors. Show Answer Correct Answer: D) LED lights work by electroluminescence in semiconductors. 6. What is "rarefaction" in the context of longitudinal waves? A) The part where wave particles are compressed. B) The part where wave particles are spread apart. C) The frequency of the wave. D) The amplitude of the wave. Show Answer Correct Answer: B) The part where wave particles are spread apart. 7. The horn of a ship makes a sound. The captain on the ship hears an echo from a cliff 4.0 s later. When the speed of sound is 340m/s, what's the distance between the cliff and the ship? A) 170 m. B) 340 m. C) 680 m. D) 1360 m. Show Answer Correct Answer: C) 680 m. 8. A tennis coach paces back and forth along the sideline 10 times in 60 seconds. The period of her pacing is: A) 0.167 Hz. B) 6.0 Hz. C) 0.167 s. D) 6.0 s. Show Answer Correct Answer: D) 6.0 s. 9. The frequency of a sound wave determines its A) Volume. B) Pitch. C) Speed. D) Refraction. Show Answer Correct Answer: B) Pitch. 10. Sound waves are longitudinal waves. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 11. Which type of wave can travel the longest distance without losing energy? A) Electromagnetic waves. B) Seismic waves. C) Sound waves. D) Water waves. Show Answer Correct Answer: A) Electromagnetic waves. 12. What is another name for wave height? A) Frequency. B) Amplitude. C) Wavelength. D) Origin. Show Answer Correct Answer: B) Amplitude. 13. The number of waves that go past a point in one second A) Amplitude. B) Wavelength. C) Frequency. D) None of the above. Show Answer Correct Answer: C) Frequency. 14. The number of complete oscillations a wave makes each second is the ..... of the wave. A) Fortitude. B) Amplitude. C) Period. D) Frequency. Show Answer Correct Answer: D) Frequency. 15. Sound waves travel fastest in A) Steel. B) Water. C) Air. D) A vacuum. Show Answer Correct Answer: A) Steel. 16. If a wave has a wavelength of 50 m and a frequency of 25 Hz, what is its velocity? A) 2 m/s. B) 150 m/s. C) 250 m/s. D) 1250 m/s. Show Answer Correct Answer: D) 1250 m/s. 17. Which has the greatest energy? A) Infared. B) Ultraviolet. C) Microwave. D) None of the above. Show Answer Correct Answer: B) Ultraviolet. 18. Sound waves that are beyond the range of human ear are known as ..... A) Infrasonic waves. B) Ultrasonic waves. C) All the above. D) None of the above. Show Answer Correct Answer: B) Ultrasonic waves. 19. When the crests of one wave overlap the crests of another wave or waves, this occurs. A) Diffraction. B) Destructiveinterference. C) Constructiveinterference. D) Resonantfrequencies. Show Answer Correct Answer: C) Constructiveinterference. 20. What is a wave in the context of physics? A) A type of sound. B) A disturbance in matter that transfers energy. C) A form of light. D) A type of chemical reaction. Show Answer Correct Answer: B) A disturbance in matter that transfers energy. 21. Which property of the wave would change if you changed the amount of energy the wave had? A) Amplitude. B) Frequency. C) Wavelength. D) Wave speed. Show Answer Correct Answer: A) Amplitude. 22. Speed of longitudinal wave in solid? A) V= $\sqrt{\frac{T}{\mu}}$. B) V= $\sqrt{\frac{B}{\rho}}$. C) V= $\sqrt{\frac{Y}{\rho}}$. D) V= $\sqrt{\frac{\gamma P}{\rho}}$. Show Answer Correct Answer: C) V= $\sqrt{\frac{Y}{\rho}}$. 23. What is an harmonic of 10 Hz A) 5 Hz. B) 15 Hz. C) 20 Hz. D) 35 Hz. Show Answer Correct Answer: C) 20 Hz. 24. A jeweler buys a sheet of diamond. She fires a laser into the diamond. The path of the laser in the diamond is visible. The laser hits the surface of the diamond on the outside at 29.8$^\circ$. At what angle does it enter the diamond? A) Not possible. B) 11.9$^\circ$. C) 0.205$^\circ$. D) 1.20$^\circ$. Show Answer Correct Answer: B) 11.9$^\circ$. 25. When energy decreases, amplitude ..... A) Increases. B) Decreases. C) All the above. D) None of the above. Show Answer Correct Answer: B) Decreases. ← 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