This quiz works best with JavaScript enabled. Home > Class 11 > Class 11 Physics (Part Ii) Chapter 17 Waves – Quiz 65 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 11 Physics (Part Ii) Chapter 17 Waves Quiz 65 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Total internal reflection is only possible when the wave is ..... A) Trying to get from a less optically dense medium to a more optically dense one. B) Trying to get from a more optically dense medium to a less optically dense one. C) All the above. D) None of the above. Show Answer Correct Answer: A) Trying to get from a less optically dense medium to a more optically dense one. 2. Which wave type ALWAYS needs a medium? A) Mechanical wave. B) Electromagnetic wave. C) Neither wave type needs a medium. D) None of the above. Show Answer Correct Answer: A) Mechanical wave. 3. Which of the following statements best describes a transverse wave? A) A wave that vibrates at right angles to the direction of energy transfer. B) A wave that vibrates parallel to the direction of energy transfer. C) A sound wave. D) A wave that crosses other wavefronts. Show Answer Correct Answer: A) A wave that vibrates at right angles to the direction of energy transfer. 4. What is the frequency of the photons emitted when an electron falls to the ground state (-10.4eV) from the-5.4eV excited state? A) 7.55 x 10$^{33}$Hz. B) 3.8 x 10$^{15}$Hz. C) 1.21 x 10$^{15}$Hz. D) 8.2 x 10$^{14}$ Hz. Show Answer Correct Answer: C) 1.21 x 10$^{15}$Hz. 5. Red light has a wavelength of 675 nm. What is its frequency? A) 2.03x1011 m. B) 4.44x1014 Hz. C) 4.44x1014 nm. D) 2.03x1011 Hz. Show Answer Correct Answer: B) 4.44x1014 Hz. 6. Heather puts a straw into a glass of water. She notices that the straw appears to be broken when she looks through the glass and the water from the side. Which term best explains why the straw looks like it is broken? A) Reflection. B) Refraction. C) Diffraction. D) Interference. Show Answer Correct Answer: B) Refraction. 7. You place a ping pong ball in a wave machine that is producing transverse waves. Which of these statements is true about the ball? A) The ball will travel in the direction of the wave. B) The ball will travel against the direction of the wave. C) The ball will bob up and down and remain in the same position. D) The ball will sink below the surface of the water. Show Answer Correct Answer: C) The ball will bob up and down and remain in the same position. 8. An ambulance siren sounds higher in pitch when: A) Moving away from listener. B) Stationary. C) Moving towards listener. D) At constant velocity. Show Answer Correct Answer: C) Moving towards listener. 9. The distance between two successive crests or two successive troughs (or compressions or rarefactions) A) Wavelength. B) Wave Speed. C) Wave Distance. D) Wave Energy. Show Answer Correct Answer: A) Wavelength. 10. The speed of propagation of a transverse wave on a 2.0-m long string fixed at both ends is 200 m/s. Which one of the following is the frequency of this string? A) 25 Hz. B) 50 Hz. C) 100 Hz. D) 200 Hz. Show Answer Correct Answer: C) 100 Hz. 11. A ..... is the distance between a point on one wave and the identical point of the next wave. A) Amplitude. B) Wavelength. C) Frequency. D) Compression. Show Answer Correct Answer: B) Wavelength. 12. What is the relationship between the frequency of a standing wave and its harmonics? A) Frequency of a standing wave and its harmonics are unrelated. B) Frequency of a standing wave and its harmonics are inversely related. C) Frequency of a standing wave and its harmonics are related by whole number multiples. D) Frequency of a standing wave and its harmonics are related by prime number multiples. Show Answer Correct Answer: C) Frequency of a standing wave and its harmonics are related by whole number multiples. 13. Boomwhackers are fun children's toys that come in a variety of different types. They all do have the same diameter of about 4 cm, but which should have the highest pitch? A) The Boomwhacker that is 32 cm long. B) The Boomwhacker that is 49 cm long. C) Both are the same because the diameters are the same. D) More information is needed. Show Answer Correct Answer: A) The Boomwhacker that is 32 cm long. 14. Two boats are anchored 7.0 meters apart. They bob up and down, returning to the same up position every 10.0 seconds. The boats rise a vertical distance of 7.0 meters between their lowest and their highest point. When one is up the other is down. There are never any wave crests between the boats. Determine the period, frequency, wavelength, amplitude and speed of the waves. A) 1.35 m/s. B) 0.09 m/s. C) 2.67 m/s. D) 3.4 m/s. Show Answer Correct Answer: C) 2.67 m/s. 15. La longitud de onda se puede medir correctamente como ..... A) La distancia desde el crest a crest consecutivo. B) La distancia entre dos puntos de equilibrio consecutivos. C) La distancia horizontal desde el crest hasta el fondo. D) La distancia vertical desde el crest hasta el fondo. Show Answer Correct Answer: A) La distancia desde el crest a crest consecutivo. 16. Enjoy your summer! A) Thanks. B) Thanks. C) Thanks. D) Thanks. Show Answer Correct Answer: A) Thanks. 17. When two waves with equal amplitudes and frequencies meet in phase, what is the result? A) Destructive interference. B) Amplification of the waves. C) Increased frequency. D) Constructive interference. Show Answer Correct Answer: D) Constructive interference. 18. Which letter represents the amplitude of a wave? A) A. B) B. C) C. D) D. Show Answer Correct Answer: B) B. 19. The electromagnetic waves with the highest energy have: A) The longest wavelength. B) The largest amplitude. C) The highest frequency. D) The slowest speed. Show Answer Correct Answer: C) The highest frequency. 20. What object would absorb the most radiation? A) A black T-shirt. B) A mirror. C) A white skateboard. D) A red apple. Show Answer Correct Answer: A) A black T-shirt. 21. Simple harmonic motion does not require A) A maximum displacement. B) Periodic motion. C) A restoring force. D) Damping. Show Answer Correct Answer: D) Damping. 22. The unit for wavelength? A) Mm. B) Joules. C) Metre. D) Hertz. Show Answer Correct Answer: C) Metre. 23. What is the period of a wave with frequency 0.2? A) 5 seconds. B) 0.2 seconds. C) 20 seconds. D) 0.5 seconds. Show Answer Correct Answer: A) 5 seconds. 24. How does pitch of a sound relate to the frequency of a sound wave? A) Pitch depends on the frequency. B) Pitch depends on the wavelength. C) Pitch depends on the amplitude. D) Pitch depends on the speed. Show Answer Correct Answer: D) Pitch depends on the speed. 25. Which of the following statements about waves is correct? A) Waves can be produced on ropes. B) Waves are a way of transferring energy from place to place. C) There are two types of wave:longitudinal and transverse. D) All of the above. Show Answer Correct Answer: D) All of the above. ← 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