This quiz works best with JavaScript enabled. Home > Class 11 > Class 11 Physics (Part Ii) Chapter 17 Waves – Quiz 7 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 11 Physics (Part Ii) Chapter 17 Waves Quiz 7 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Electron has energy of 100 eV what will be itswavelength A) 1.2 A. B) 10 A. C) 100 A. D) 1 A. Show Answer Correct Answer: A) 1.2 A. 2. Through which of these mediums do sound waves travel most slowly? A) Wood. B) Water. C) Cold Air. D) Iron. Show Answer Correct Answer: C) Cold Air. 3. Which of the following radiations are used to treat muscle ache? A) Microwaves. B) Infrared Rays. C) Ultraviolet Rays. D) X-Rays. Show Answer Correct Answer: B) Infrared Rays. 4. In the wave equation ($\lambda$) represents what? A) Amplitude. B) Wavelength. C) Frequency. D) Wave speed. Show Answer Correct Answer: B) Wavelength. 5. An electromagnetic wave can be produced when the charge is A) Moving in a circular orbit. B) Moving with a constant velocity. C) Falling in an electric field. D) Both (a) and (c). Show Answer Correct Answer: D) Both (a) and (c). 6. What is wavelength a measure of? A) Height of a wave. B) Speed of a wave. C) Temperature of a wave. D) Distance between two points on a wave. Show Answer Correct Answer: D) Distance between two points on a wave. 7. ..... waves have vibrations that run parallel to the direction the wave travels, and ..... waves have vibrations that run perpendicular to the direction the wave travels. A) Transverse, longitudinal. B) Longitudinal, transverse. C) All the above. D) None of the above. Show Answer Correct Answer: B) Longitudinal, transverse. 8. Which property of electromagnetic waves allows them to be polarised? A) They are longitudinal. B) They travel at constant speed. C) Their electric field oscillates perpendicular to the direction of travel. D) Their frequency is very high. Show Answer Correct Answer: C) Their electric field oscillates perpendicular to the direction of travel. 9. You can hear ultrasound A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: B) False. 10. What does "hertz" measure in terms of wave properties? A) The size of a wave. B) The speed of a wave. C) The frequency of a wave. D) The energy of a wave. Show Answer Correct Answer: C) The frequency of a wave. 11. Which type of waves require a medium to travel through? A) Electromagnetic waves. B) Longitudinal waves. C) Mechanical waves. D) Transverse waves. Show Answer Correct Answer: C) Mechanical waves. 12. Which of the these waves is an electromagnetic wave? A) Sound wave. B) Ocean Wave. C) Seismic Wave. D) Radio Wave. Show Answer Correct Answer: D) Radio Wave. 13. The higher the amplitudue the (a) energy it has. A) Less. B) A. more. C) All the above. D) None of the above. Show Answer Correct Answer: B) A. more. 14. Transverse waves move mediums A) At a right angle. B) In a circle. C) And matter too. D) At an acute angle. Show Answer Correct Answer: A) At a right angle. 15. Waves combine to produce a smaller or zero-amplitude wave in a process called A) Reflection. B) Refraction. C) Destructive interference. D) Constructive interference. Show Answer Correct Answer: C) Destructive interference. 16. In a wave, if the frequency increases, what happens to the wavelength? A) It decreases. B) It stays the same. C) It increases. D) It becomes random. Show Answer Correct Answer: A) It decreases. 17. The wave machine at a swimming pool oscillates at a frequency of 0.25 Hz. What is the time period of the wave? A) 25 seconds. B) 0.25 seconds. C) 4 seconds. D) 40 seconds. Show Answer Correct Answer: C) 4 seconds. 18. What is the term for the distance between two consecutive crests of a wave? A) Amplitude. B) Wavelength. C) Frequency. D) Period. Show Answer Correct Answer: B) Wavelength. 19. State the difference between transverse and longitudinal waves. A) Transverse waves do not transfer energy. B) Longitudinal waves oscillate perpendicular to the direction of energy transfer. C) Transverse waves oscillate parallel to the direction of energy transfer. D) Transverse waves oscillate perpendicular to the direction of energy transfer, while longitudinal waves oscillate parallel to the direction of energy transfer. Show Answer Correct Answer: D) Transverse waves oscillate perpendicular to the direction of energy transfer, while longitudinal waves oscillate parallel to the direction of energy transfer. 20. What type of wave is created when a person does a cannon ball into a pool? A) Transverse. B) Compression. C) Longitudinal. D) Electromagnetic. Show Answer Correct Answer: A) Transverse. 21. As the frequency increases: A) Wavelength increases. B) Wavelength decreases. C) Wavelength stays the same. D) None of the above. Show Answer Correct Answer: B) Wavelength decreases. 22. Frequency of a wave is measured in units called A) Joules (J). B) Newtons (N). C) Hertz (Hz). D) Seconds. Show Answer Correct Answer: C) Hertz (Hz). 23. Which color absorbs light? A) Black. B) White. C) Red. D) Blue. Show Answer Correct Answer: A) Black. 24. A(n) ..... travels in a direction perpendicular to its displacement. A) Surface wave. B) Longitudinal wave. C) Interference wave. D) Transverse wave. Show Answer Correct Answer: D) Transverse wave. 25. In an inelastic collision, as compared to an elastic collision, what is to be expected? A) Momentum is conserved and energy is conserved. B) Momentum is conserved and energy is not conserved. C) Momentum is not conserved and energy is conserved. D) Momentum is not conserved and energy is not conserved. Show Answer Correct Answer: B) Momentum is conserved and energy is not conserved. ← 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 8Class 11 Physics (Part Ii) Chapter 17 Waves Quiz 9Class 11 Physics (Part Ii) Chapter 17 Waves Quiz 10Class 11 Physics (Part Ii) Chapter 17 Waves Quiz 11 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books