This quiz works best with JavaScript enabled. Home > Class 11 > Class 11 Physics (Part Ii) Chapter 17 Waves – Quiz 72 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 11 Physics (Part Ii) Chapter 17 Waves Quiz 72 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. A jeweler is determining the optical properties of an unknown blue gemstone. She uses an angle of incidence of 62$^\circ$, and measures an angle of refraction of 30$^\circ$. Assuming the index of refraction of air is 1.0, what is the index of refraction of the gem? A) 1.54. B) 2.42. C) 2.16. D) 1.77. Show Answer Correct Answer: D) 1.77. 2. When a guitar is tuned to adjust its pitch, what is it that is changed? A) The wavelength of the fundamental. B) The frequency of the fundamental. C) The amplitude of the fundamental. D) None of the above. Show Answer Correct Answer: B) The frequency of the fundamental. 3. Define "waves" in the context of physics. A) A form of energy transfer. B) A type of particle. C) A unit of force. D) A measure of temperature. Show Answer Correct Answer: A) A form of energy transfer. 4. Which color has the least amount of energy? A) Red. B) Orange. C) Green. D) Blue. Show Answer Correct Answer: A) Red. 5. The speed of sound in air at 0$^\circ$C is always A) Greater than the speed of sound in a vacuum. B) Greater than the speed of sound in steel. C) Greater than the speed of sound in water. D) Greater than the speed of sound in rock. E) Less than the speed of sound in other gasses. Show Answer Correct Answer: A) Greater than the speed of sound in a vacuum. 6. What may happen to a person's hearing if they are exposed to high decibel levels from construction sites? A) Their hearing may be damaged. B) Their hearing will become more sensitive. C) Their hearing will not be affected. D) Their hearing will improve. Show Answer Correct Answer: B) Their hearing will become more sensitive. 7. How much energy is stored in this compressed spring:k = 16 N/mx = 0.4 meters A) 6.4 J. B) 40 J. C) 1.28 J. D) 0.025 J. Show Answer Correct Answer: C) 1.28 J. 8. Which part of the electromagnetic spectrum has the longest wavelengths? A) Radio waves. B) Gamma rays. C) Infrared light. D) Ultraviolet light. Show Answer Correct Answer: A) Radio waves. 9. The ..... is the material through which a mechanical wave travels. A) Amplitude. B) Medium. C) Cloth. D) Matter. Show Answer Correct Answer: B) Medium. 10. An echo would be an example of ..... of sound waves. A) Reflection. B) Refraction. C) Diffraction. D) Interference. Show Answer Correct Answer: A) Reflection. 11. Which type of electromagnetic energy has a shorter wavelength than ultraviolet waves? A) Visible light. B) Microwaves. C) X rays. D) Infrared light. Show Answer Correct Answer: C) X rays. 12. If index of refraction 1 is 1.5, index of refraction 2 is 2.0, and the angle of incidence is 45 degrees, what is the angle of refraction? A) 16 degrees. B) 32 degrees. C) 48 degrees. D) 64 degrees. Show Answer Correct Answer: B) 32 degrees. 13. These wavelengths correspond to light in the visible section of the Electromagnetic Spectrum400nm, 470nm, 510nm, 650nmWhich wavelength corresponds to blue light? A) 400nm. B) 470nm. C) 510nm. D) 650nm. Show Answer Correct Answer: B) 470nm. 14. What is the formula for calculating the wave FREQUENCY? A) V=d/t. B) F=N/t. C) V=f * Lambda. D) T=1/f. Show Answer Correct Answer: B) F=N/t. 15. When the incident angle of the light ray when traveled from oil to water incresed from 40 to 80.then the relative refractive index between.oil and water will ..... A) Increased to double its value. B) Decreased to half its value. C) Decreased to quarter its value. D) Unchanged. Show Answer Correct Answer: D) Unchanged. 16. What are the units of frequency? A) M/s. B) S. C) Hz. D) M. Show Answer Correct Answer: C) Hz. 17. The distance between two corresponding parts of a wave is its A) Amplitude. B) Frequency. C) Wavelength. D) Velocity. Show Answer Correct Answer: C) Wavelength. 18. Radio waves are used in A) Satellite communications. B) The transmission of television signals. C) Electrical heaters. D) Medical Imaging. Show Answer Correct Answer: B) The transmission of television signals. 19. What is the wavelength of a 4.2 x 10$^{5}$ Hz AM radio wave? A) 5.2 x 10$^{5 }$m. B) 577 m. C) 714 m. D) 4.2 x 10$^{5 }$m. Show Answer Correct Answer: C) 714 m. 20. The distance a wave travels before it starts to repeat is its A) Frequency. B) Amplitude. C) Wavelength. D) Surface. Show Answer Correct Answer: C) Wavelength. 21. Another way of describing the word 'perpendicular' is 'at 90$^\circ$ to' A) True. B) False. C) Don't know/Can't remember. D) None of the above. Show Answer Correct Answer: A) True. 22. As light travels through a lens in causes an object to appear larger, this is due to which behavior? A) Transmission. B) Reflection. C) Absorption. D) Refraction. Show Answer Correct Answer: D) Refraction. 23. A sound wave is moving through air in a tube. What is the frequency of the note of the sound wave if it has a wavelength of $0.670m$ A) $512Hz$. B) $230Hz$. C) $448MHz$. D) $201MHz$. Show Answer Correct Answer: A) $512Hz$. 24. Which electromagnetic wave is used in medical imaging? A) Gamma rays. B) X-rays. C) Ultraviolet. D) Infrared. Show Answer Correct Answer: B) X-rays. 25. A standing wave: A) Transports energy but does not move. B) Is composed of a single travelling wave. C) Stores energy. D) Makes a loud noise. Show Answer Correct Answer: C) Stores energy. ← 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