This quiz works best with JavaScript enabled. Home > Cbse > Class 11 > Science > Physics Part Ii > Class 11 Physics (Part Ii) Chapter 17 Waves – Quiz 6 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 11 Physics (Part Ii) Chapter 17 Waves Quiz 6 (60 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Develop a mathematical model predicting the speed of light waves in a specific medium. Justify your model's validity using scientific principles. A) Speed = Frequency x Wavelength; based on wave properties. B) Speed = Amplitude / Frequency; based on mathematical symmetry. C) Speed = Wavelength x Amplitude; based on trial and error. D) Speed = Wavelength-Frequency; based on common knowledge. Show Answer Correct Answer: A) Speed = Frequency x Wavelength; based on wave properties. 2. A longitudinal wave carries energy ..... to the direction the medium is moving. A) At a 90 degree angle. B) Perpendicular. C) Parallel. D) At a 45 degree angle. Show Answer Correct Answer: C) Parallel. 3. A physics student notices that 4.0 waves arrive at the beach every 20. seconds. The frequency of these waves is A) 80 Hz. B) 0.20 Hz. C) 16 Hz. D) 5.0 Hz. Show Answer Correct Answer: D) 5.0 Hz. 4. What must you do to increase the energy of a wave? A) Increase the potential energy put into making the wave. B) Decrease the amount of potential energy put into making the wave. C) Create a different type of wave. D) Energy is constant in a wave and cannot be increased. Show Answer Correct Answer: A) Increase the potential energy put into making the wave. 5. Part of a standing wave that does not move A) Antinode. B) Trough. C) Crest. D) Node. Show Answer Correct Answer: D) Node. 6. What type of interference occurs when two waves cancel each other out? A) Constructive interference. B) Longitudinal interference. C) Destructive interference. D) Transverse interference. Show Answer Correct Answer: C) Destructive interference. 7. The longer the ..... the ..... the frequency. A) Amplitude, higher. B) Wavelength, higher. C) Wavelength, lower. D) Amplitude, lower. Show Answer Correct Answer: C) Wavelength, lower. 8. What type of energy is in food and coal? A) Chemical energy. B) Electrical energy. C) Kinetic energy. D) Electromagnetic energy. Show Answer Correct Answer: A) Chemical energy. 9. What can a diffraction grating be used to measure? A) The wavelength of light. B) The energy of light. C) The speed of light. D) The amplitude of light. Show Answer Correct Answer: A) The wavelength of light. 10. An explosion causes the emission of the following types of radiationI LightII SoundIII Infra-redWhich of these will be received first by a person some distance away from the source? A) I and II only. B) I and III only. C) II and III only. D) I, II and III. Show Answer Correct Answer: B) I and III only. 11. Which wave type has particles moving perpendicular to wave travel? A) Longitudinal waves. B) Transverse waves. C) Electromagnetic waves. D) Gravitational waves. Show Answer Correct Answer: B) Transverse waves. 12. Which type of wave as oscillations that are parallel to the direction of energy transfer? A) Longitudinal. B) Transverse. C) Light. D) S-Wave. Show Answer Correct Answer: A) Longitudinal. 13. If frequency is increased then the period is ..... A) Increased. B) Decreased. C) Stays the same. D) None of the above. Show Answer Correct Answer: B) Decreased. 14. Which of the following determines the pitch of a sound wave? A) Frequency. B) Reflection. C) Mass. D) Density. Show Answer Correct Answer: A) Frequency. 15. A girl is sitting on a rock in the sea looking at the passing waves. She notices that five complete wavelengths pass her in 20 s. What is the frequency of this wave? A) 100 Hz. B) 15 Hz. C) 4.0 Hz. D) 0.25 Hz. Show Answer Correct Answer: D) 0.25 Hz. 16. Wave that do not require a medium are called ..... A) Electromagnetic wave. B) Compression wave. C) Sound wave. D) Transverse wave. Show Answer Correct Answer: A) Electromagnetic wave. 17. What is the purpose of noise-canceling headphones? A) To create destructive interference. B) To cancel out sound waves. C) To amplify sound waves. D) To increase the intensity of sound waves. Show Answer Correct Answer: B) To cancel out sound waves. 18. The frequency of sound waves determine A) Quality. B) Type of interference. C) Pitch. D) Loudness. Show Answer Correct Answer: C) Pitch. 19. As Physics Standing Waves A) The wavelength of the wave. B) The frequency of the wave. C) The amplitude of the wave. D) The speed of the wave. Show Answer Correct Answer: B) The frequency of the wave. 20. The sound heard when a piano key is hit is caused by A) Momentum. B) Acceleration. C) Refraction. D) Vibration. Show Answer Correct Answer: D) Vibration. 21. Which type of electromagnetic wave has the greatest frequency? A) Radio waves. B) Infrared. C) Microwaves. D) Gamma rays. Show Answer Correct Answer: D) Gamma rays. 22. Which electromagnetic wave possesses the least energy? A) Infrared. B) Gamma ray. C) Radio wave. D) Microwave. Show Answer Correct Answer: C) Radio wave. 23. When two or more sound waves meet, they can A) Reflect. B) Diffract. C) Interfere. D) Refract. Show Answer Correct Answer: C) Interfere. 24. One beam of coherent light travels path P$_{1}$ in arriving at point Q and another coherent beam travels path P$_{2}$ in arriving at the same point. If these two beams are to interfere destructively, the path difference P$_{1}$-P$_{2}$ must be equal to A) A whole number of half-wavelengths. B) A whole number of wavelengths. C) Zero. D) An odd number of half-wavelengths. Show Answer Correct Answer: D) An odd number of half-wavelengths. 25. The smaller the wavelength the ..... the energy A) Lower. B) Higher. C) All the above. D) None of the above. Show Answer Correct Answer: B) Higher. 26. Damping is the speeding up of periodic motion due to friction. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: B) False. 27. What effect describes the change in pitch due to movement of the sound source? A) Refraction effect. B) Diffraction effect. C) Reflection effect. D) Doppler effect. Show Answer Correct Answer: D) Doppler effect. 28. How is an electromagnetic wave different from a mechanical wave? A) An electromagnetic wave has no wavelength, but a mechanical wave has a wavelength. B) An electromagnetic wave travels slower than a mechanical wave. C) An electromagnetic wave can travel through a vacuum, but a mechanical wave cannot. D) An electromagnetic wave has a larger amplitude than a mechanical wave. Show Answer Correct Answer: C) An electromagnetic wave can travel through a vacuum, but a mechanical wave cannot. 29. The vibrations in a longitudinal wave are ..... to the direction of energy transfer. A) Parallel. B) Perpendicular. C) Up and Down. D) Backwards. Show Answer Correct Answer: A) Parallel. 30. As the wavelength of light increases A) The speed of light increases. B) The intensity increases. C) The energy decreases. D) The frequency increases. Show Answer Correct Answer: C) The energy decreases. 31. What is radiant energy? A) Energy from the earth. B) Energy from ocean waves. C) Energy from heat. D) Energy given off by the sun. Show Answer Correct Answer: D) Energy given off by the sun. 32. The periodic time T of a wave is: A) The highest point of the wave. B) The distance between two successive crests. C) The lowest point of the wave. D) The time of one wavelength. Show Answer Correct Answer: D) The time of one wavelength. 33. The maximum displacement of an element from its normal position A) Periodo $\left(T\right)$. B) Amplitude $\left(A\right)$. C) Wavelength $\left(\lambda\right)$. D) Crest of the wave. Show Answer Correct Answer: B) Amplitude $\left(A\right)$. 34. Which of these is an example of a transverse mechanical wave? A) Pressure waves. B) Sound. C) Radio waves. D) A vibrating guitar string. Show Answer Correct Answer: D) A vibrating guitar string. 35. Which of the following statements would be true?I A note of frequency 512 Hz has a higher pitch than one of frequency 256 HzII A high pitched note travels faster than a low pitched noteIII If the pitch of a note is increased then the periodic time of the vibrations is also increased A) I only. B) I and II only. C) I and III only. D) II and III only. Show Answer Correct Answer: A) I only. 36. Which type of wave has to have mass in order to travel? A) Electromagnetic. B) Mechanical. C) Both Electromagnetic and Mechanical. D) None of the above. Show Answer Correct Answer: B) Mechanical. 37. Which of the following is NOT a characteristic of mechanical waves? A) They can travel through a vacuum. B) They require a medium to travel. C) They involve the collision of molecules in the medium. D) They include seismic waves. Show Answer Correct Answer: A) They can travel through a vacuum. 38. A harmonic motion has a frequency of 8 Hz. What is the period of the wave? A) 0.5 sec. B) 2 m. C) 0.125 sec. D) 16 sec. Show Answer Correct Answer: C) 0.125 sec. 39. What is amplitude? A) The height of a waveform. B) How far apart the peaks of a waveform are. C) How many waveforms there are. D) None of the above. Show Answer Correct Answer: A) The height of a waveform. 40. In any periodic motion, the amount of time required for an object to repeat one complete cycle of motion A) Period. B) Periodic wave. C) Periodic motion. D) None of the above. Show Answer Correct Answer: A) Period. 41. What is the purpose of using an instrument tuner when investigating the frequency of a sound wave? A) To change the frequency of the wave. B) To increase the amplitude of the wave. C) To check the accuracy of the measurement. D) To create interference patterns. Show Answer Correct Answer: C) To check the accuracy of the measurement. 42. True or False:When placed in water, a ball moves from one place to another. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: B) False. 43. What part of a longitudinal wave is "spread apart" A) Amplitude. B) Rarefaction. C) Frequency. D) Compression. Show Answer Correct Answer: B) Rarefaction. 44. Which of the following will decrease the spacing of Young's double slit fringes A) Decreasing the distance between the slits. B) Using narrower slits. C) Moving the screen further away. D) Increasing the frequency of the waves. Show Answer Correct Answer: D) Increasing the frequency of the waves. 45. The visible part of the electromagnetic spectrum consists of the colors we see in a rainbow. Which color of visible light has the longest wavelength? A) Blue. B) Green. C) Violet. D) Red. Show Answer Correct Answer: D) Red. 46. ..... waves NEED a medium to travel. A) Seismic. B) Light. C) Mechanical. D) None of the above. Show Answer Correct Answer: C) Mechanical. 47. What type of waves move up and down or side to side like a rope? A) Reflecting waves. B) Surface waves. C) Transverse waves. D) Longitudinal waves. Show Answer Correct Answer: C) Transverse waves. 48. What is the principle of superposition in wave theory? A) Waves cannot interfere with each other. B) Waves can only travel in one direction. C) The speed of a wave is constant. D) The total displacement is the sum of individual displacements. Show Answer Correct Answer: D) The total displacement is the sum of individual displacements. 49. A ..... is a repeating disturbance that transfers energy through matter or space. A) Medium. B) Wavelength. C) Wave. D) Frequency. Show Answer Correct Answer: C) Wave. 50. The first harmonic has A) 2 antinodes. B) 1 antinode. C) 1 node. D) No nodes. Show Answer Correct Answer: B) 1 antinode. 51. 2 points on a progressive wave are 1/3 of a wavelength apart. The distance between the two points is 2cm. If the speed of the wave is 10 ms$^{-1}$ what is the frequency of the wave? A) 5Hz. B) 167Hz. C) 1500Hz. D) 20Hz. Show Answer Correct Answer: B) 167Hz. 52. This type of EM radiation is not visible to human eyes and is given off in the form of heat ..... A) UV. B) Visible. C) Infrared. D) Micro. Show Answer Correct Answer: C) Infrared. 53. What is a standing wave and how is it formed? A) A standing wave is a wave that travels in one direction. B) A standing wave is a type of sound wave that cannot be produced in a vacuum. C) A standing wave is formed by a single wave reflecting off a barrier. D) A standing wave is a wave that remains in a constant position, formed by the interference of two waves traveling in opposite directions. Show Answer Correct Answer: D) A standing wave is a wave that remains in a constant position, formed by the interference of two waves traveling in opposite directions. 54. The highest point of a wave is called the A) Trough. B) Wavelength. C) Amplitude. D) Crest. Show Answer Correct Answer: D) Crest. 55. What is "diffraction" in relation to waves? A) The compression of a wave. B) The expansion of a wave. C) The bending of a wave around a barrier. D) The reflection of a wave. Show Answer Correct Answer: C) The bending of a wave around a barrier. 56. An elastic rope is stretched out and loosely attached to a wall such that its end is free to move. An upward-displaced pulse is introduced into the rope. The pulse travels through the rope, reaches the boundary with the wall and reflects. The reflected pulse will be ..... A) Upright (displaced upwards). B) Inverted (displaced downwards). C) Either inverted or upright, depending upon its amplitude. D) None of the above. Show Answer Correct Answer: A) Upright (displaced upwards). 57. The number of cycles per second is called ..... A) Frequency. B) Oscillation. C) Amplitude. D) Wavelength. Show Answer Correct Answer: A) Frequency. 58. What is the low point in a transverse wave called? A) Rarefaction. B) Wavelength. C) Peak. D) Trough. Show Answer Correct Answer: D) Trough. 59. What is the range of human hearing in Hertz? A) 50 Hz to 25, 000 Hz. B) 20 Hz to 20, 000 Hz. C) 5 Hz to 30, 000 Hz. D) 10 Hz to 15, 000 Hz. Show Answer Correct Answer: B) 20 Hz to 20, 000 Hz. 60. Maurice is wearing a yellow shirt. What behavior is causing our eye to see the yellow waves? A) Transmission. B) Absorption. C) Refraction. D) Reflection. Show Answer Correct Answer: D) Reflection. ← PreviousNext →Related QuizzesScience QuizzesClass 11 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 7Class 11 Physics (Part Ii) Chapter 17 Waves Quiz 8Class 11 Physics (Part Ii) Chapter 17 Waves Quiz 9 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books