This quiz works best with JavaScript enabled. Home > Class 11 > Class 11 Physics (Part Ii) Chapter 17 Waves – Quiz 4 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 11 Physics (Part Ii) Chapter 17 Waves Quiz 4 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. What is a wave? A) A wave is a disturbance that transfers energy through space and matter. B) A wave is a solid object that cannot move. C) A wave is a fixed position that does not change over time. D) A wave is a type of particle that exists only in water. Show Answer Correct Answer: A) A wave is a disturbance that transfers energy through space and matter. 2. What is the formula to calculate the speed of a wave? A) Speed = Frequency + Wavelength. B) Speed = Amplitude x Wavelength. C) Speed = Frequency x Wavelength. D) Speed = Frequency / Wavelength. Show Answer Correct Answer: C) Speed = Frequency x Wavelength. 3. What is electromagnetic wave? A) Electromagnetic waves are waves of electric and magnetic fields that travel through space. B) Electromagnetic waves are vibrations in solid materials that produce heat. C) Electromagnetic waves are particles that move in a straight line. D) Electromagnetic waves are sound waves that travel through air. Show Answer Correct Answer: A) Electromagnetic waves are waves of electric and magnetic fields that travel through space. 4. Low amplitude A) The sound is quieter because the waves carries less energy. B) The sound is louder due to increased wave frequency. C) The sound is distorted due to high energy waves. D) The sound is clearer because of low frequency waves. Show Answer Correct Answer: A) The sound is quieter because the waves carries less energy. 5. A sound wave is produced when an object ..... A) Goes faster. B) Slows down. C) Vibrates. D) Produces light. Show Answer Correct Answer: C) Vibrates. 6. Do waves carry energy or matter? A) Energy. B) Matter. C) I'm not sure. D) None of the above. Show Answer Correct Answer: A) Energy. 7. What is the frequency of a wave that takes 10 seconds to pass a point? (a) A) A. 0.1Hz. B) 1 Hz. C) 10 Hz. D) 0.01 Hz. E) Don't know/Can't remember. Show Answer Correct Answer: A) A. 0.1Hz. 8. Given a graph showing a direct relationship between frequency and speed in a specific medium, if the frequency is doubled, what is the likely effect on the speed of the waves? A) It doubles. B) It quadruples. C) It remains constant. D) It halves. Show Answer Correct Answer: C) It remains constant. 9. What type of lens causes parallel waves to converge at the principal focus? A) Convex lens. B) Cylindrical lens. C) Concave lens. D) Bifocal lens. Show Answer Correct Answer: A) Convex lens. 10. What does pitch depend on? A) Amplitude. B) Frequency. C) Intensity. D) Volume of sound. Show Answer Correct Answer: B) Frequency. 11. The time for one cycle is the ..... A) Wave speed. B) Frequency. C) Wavelength. D) Amplitude. E) Period. Show Answer Correct Answer: E) Period. 12. Amplitude reflects the amount of ..... in a wave. A) Energy. B) Compression. C) Rarefaction. D) Speed. Show Answer Correct Answer: A) Energy. 13. What is the frequency of a wave if it takes 1.5 seconds to complete 2 wavelengths? A) 0.667 Hz. B) 1.5 Hz. C) 1.33 Hz. D) 2.02 Hz. Show Answer Correct Answer: C) 1.33 Hz. 14. ..... is the distance between a point on one wave and the identical point of the next wave. A) Amplitude. B) Wavelength. C) Frequency. D) Crest. Show Answer Correct Answer: B) Wavelength. 15. Which one of the following is longitudinal wave A) Lite wave. B) Sound wave. C) Electro magnetic wave. D) Matter wave. Show Answer Correct Answer: B) Sound wave. 16. Which of the following is an example of a longitudinal wave? A) Light. B) Sound. C) Radio. D) EM. Show Answer Correct Answer: B) Sound. 17. The type of wave in which the medium moves perpendicular to the wave motion is A) Transverse. B) Longitudinal (or compression). C) Refraction. D) Diffraction. Show Answer Correct Answer: A) Transverse. 18. If the refractive index of diamond is 1.41 then the greatest incidentangle that lets the light ray to emerge to air is ..... A) 30. B) 45. C) 60. D) None of the above. Show Answer Correct Answer: B) 45. 19. What type of EM radiation is used in military night vision goggles? A) Radio wave. B) Microwave. C) Infrared. D) Light. Show Answer Correct Answer: C) Infrared. 20. Top of the wave A) Wavelength. B) Amplitude. C) Trough. D) Crest. Show Answer Correct Answer: D) Crest. 21. When the sound source moves, the frequency changesex. police car siren sounding lower pitch after the car passes A) Pitch. B) Frequency. C) Doppler Effect. D) Medium. Show Answer Correct Answer: C) Doppler Effect. 22. Put the visible light colors in order from longest wavelength to shortest wavelength A) Violet, Indigo, Blue, Green, Orange, Yellow, Red. B) Red, Orange, Yellow, Green, Blue, Indigo, Violet. C) Red, Yellow, Green, Orange, Violet, Blue, Indi. D) None of the above. Show Answer Correct Answer: B) Red, Orange, Yellow, Green, Blue, Indigo, Violet. 23. What happens to the amplitude of a standing wave at a node? A) The amplitude of a standing wave at a node oscillates. B) The amplitude of a standing wave at a node doubles. C) The amplitude of a standing wave at a node is zero. D) The amplitude of a standing wave at a node becomes negative. Show Answer Correct Answer: C) The amplitude of a standing wave at a node is zero. 24. Gamma rays are used for? A) Sterilising food and medical equipment. B) Communications. C) Heaters. D) Cooking. Show Answer Correct Answer: A) Sterilising food and medical equipment. 25. The bigger the amplitude the higher the tone in a sound A) False. B) Truth. C) All the above. D) None of the above. Show Answer Correct Answer: A) False. ← 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 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 10Class 11 Physics (Part Ii) Chapter 17 Waves Quiz 11 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books