This quiz works best with JavaScript enabled. Home > Class 11 > Class 11 Physics (Part Ii) Chapter 17 Waves – Quiz 51 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 11 Physics (Part Ii) Chapter 17 Waves Quiz 51 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. A sound wave travels from air into water. Which row describes what happens to the frequency and the wavelength of the wave? A) Frequency:decreases; Wavelength:increases. B) Frequency:decreases; Wavelength:stays the same. C) Frequency:stays the same; Wavelength:decreases. D) Frequency:stays the same; Wavelength:increases. Show Answer Correct Answer: D) Frequency:stays the same; Wavelength:increases. 2. Which of the following electromagnetic waves has the lowest frequencies? A) Ultraviolet. B) Visible light. C) Microwaves. D) X-ray. Show Answer Correct Answer: C) Microwaves. 3. What happens to the frequency of a wave as wavelength increases? A) Increases. B) Decreases. C) Remains constant. D) Diminishes to zero. Show Answer Correct Answer: B) Decreases. 4. True or False:Amplitude can increase or decrease wavelength A) True, amplitude can increase or decrease wavelength. B) False, frequency can increase or decrease wavelength. C) False, crests can increase or decrease wavelength. D) None of the above. Show Answer Correct Answer: B) False, frequency can increase or decrease wavelength. 5. Waves that travel through a medium are ..... waves. A) Electromagnetic. B) Compressional. C) Transverse. D) Mechanical. Show Answer Correct Answer: D) Mechanical. 6. The de Broglie wavelength of a particle is the same as the wavelength of photon. Then, the photon's energy is: A) Equal to the kinetic energy of the particle. B) Less than kinetic energy of the particle. C) Greater than kinetic energy of the particle. D) Nothing can be specified. Show Answer Correct Answer: C) Greater than kinetic energy of the particle. 7. How does infrared affect the human body during excessive exposure? A) Internal heating of body tissue. B) Damage to surface cells and blindness. C) Skin burns. D) Cancer, mutations. Show Answer Correct Answer: C) Skin burns. 8. What must be moving for the Doppler effect to occur? A) Source. B) Listener. C) Waves. D) Source and/or listener. Show Answer Correct Answer: D) Source and/or listener. 9. $\lambda$ = 4 metersv = 10 m/secDetermine the frequency. A) 14 Hz. B) 40 Hz. C) 0.4 Hz. D) 2.5 Hz. Show Answer Correct Answer: D) 2.5 Hz. 10. Wave frequency is the ..... of waves passing a given point per second. A) Amplitude. B) Wavelength. C) Speed. D) Number. Show Answer Correct Answer: D) Number. 11. Which refers to the number of wavelengths that pass a fixed point in a second? A) Wavelength. B) Amplitude. C) Frequency. D) Compression. Show Answer Correct Answer: C) Frequency. 12. In which type of wave do the particles of the medium move perpendicular to the direction of the wave's travel? A) Longitudinal wave. B) Transverse wave. C) Surface wave. D) Mechanical waveTagsDOK Level 1:Recall. Show Answer Correct Answer: B) Transverse wave. 13. The speed of light in corn oil is the same as the speed of light in A) Diamond. B) Flint Glass. C) Air. D) Glycerol. Show Answer Correct Answer: D) Glycerol. 14. What is used to demonstrate the physics of traveling waves in the video? A) A water tank. B) A spring. C) A metal rod. D) A piece of rope. Show Answer Correct Answer: D) A piece of rope. 15. How do you measure wavelength? A) Transverse and longitudinal. B) The distance between two corresponding parts of a wave. C) Crest to Trough. D) From resting position, up to crest. Show Answer Correct Answer: B) The distance between two corresponding parts of a wave. 16. What does the pitch of a sound depend on? A) Wave intensity. B) Wave frequency. C) Wave speed. D) Wave amplitude. Show Answer Correct Answer: B) Wave frequency. 17. An opaque medium will: A) Allow energy to pass completely through without any energy being lost or scattered. B) Not allow energy to pass through. C) Allow energy to completely pass through buy some of the energy will be lost or scattered. D) None of the above. Show Answer Correct Answer: B) Not allow energy to pass through. 18. Polarised sunglasses are designed to reduce glare by selectively blocking light waves that oscillate in which direction? A) Perpendicular to the direction of propagation. B) In a random direction. C) Parallel to the direction of propagation. D) At an angle of 45 degrees to the direction of propagation. Show Answer Correct Answer: A) Perpendicular to the direction of propagation. 19. How does a wave transfer energy? A) By changing its frequency. B) By changing its wavelength. C) By disturbing the medium through which it travels. D) By moving matter from one place to another. Show Answer Correct Answer: C) By disturbing the medium through which it travels. 20. If a force of 20 N stretches a spring 0.5 m, what is the spring constant? A) 10 N/m. B) 20 N/m. C) 40 N/cm. D) 40 N/m. Show Answer Correct Answer: D) 40 N/m. 21. The number of wavelengths per unit time. A) Wavelength. B) Frequency. C) Speed. D) Trough. Show Answer Correct Answer: B) Frequency. 22. The word diffraction means ..... A) Dispersing of waves. B) Reflecting of waves. C) Refraction of waves. D) Spreading of waves. Show Answer Correct Answer: D) Spreading of waves. 23. What is the only type of EM waves the human eye can see? A) Radio waves. B) Light waves. C) Visible light. D) Gamma ray waves. Show Answer Correct Answer: C) Visible light. 24. X rays are used in A) Satellite communications. B) The transmission of television signals. C) Electrical heaters. D) Medical Imaging. Show Answer Correct Answer: D) Medical Imaging. 25. Travels through solids fastest because the molecules are closer together A) Speed of sound. B) Wavelength. C) Frequency. D) Amplitude. Show Answer Correct Answer: A) Speed of sound. ← 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