This quiz works best with JavaScript enabled. Home > Cbse > Class 11 > Science > Physics Part Ii > Class 11 Physics (Part Ii) Chapter 17 Waves – Quiz 21 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 11 Physics (Part Ii) Chapter 17 Waves Quiz 21 (60 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. The de Broglie wavelength of a particle is the same as the wavelength of photon. Then, the photon's energy is: A) Nothing can be specified. B) Equal to the kinetic energy of the particle. C) Less than kinetic energy of the particle. D) Greater than kinetic energy of the particle. Show Answer Correct Answer: D) Greater than kinetic energy of the particle. 2. 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. 3. 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. 4. $\lambda$ = 4 metersv = 10 m/secDetermine the frequency. A) 2.5 Hz. B) 0.4 Hz. C) 14 Hz. D) 40 Hz. Show Answer Correct Answer: A) 2.5 Hz. 5. Wave frequency is the ..... of waves passing a given point per second. A) Wavelength. B) Amplitude. C) Number. D) Speed. Show Answer Correct Answer: C) Number. 6. Which refers to the number of wavelengths that pass a fixed point in a second? A) Compression. B) Frequency. C) Wavelength. D) Amplitude. Show Answer Correct Answer: B) Frequency. 7. 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. 8. The speed of light in corn oil is the same as the speed of light in A) Glycerol. B) Diamond. C) Air. D) Flint Glass. Show Answer Correct Answer: A) Glycerol. 9. What is used to demonstrate the physics of traveling waves in the video? A) A water tank. B) A spring. C) A piece of rope. D) A metal rod. Show Answer Correct Answer: C) A piece of rope. 10. 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. 11. What does the pitch of a sound depend on? A) Wave amplitude. B) Wave speed. C) Wave intensity. D) Wave frequency. Show Answer Correct Answer: D) Wave frequency. 12. 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. 13. 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. 14. How does a wave transfer energy? A) By moving matter from one place to another. B) By changing its frequency. C) By disturbing the medium through which it travels. D) By changing its wavelength. Show Answer Correct Answer: C) By disturbing the medium through which it travels. 15. If a force of 20 N stretches a spring 0.5 m, what is the spring constant? A) 40 N/m. B) 40 N/cm. C) 10 N/m. D) 20 N/m. Show Answer Correct Answer: A) 40 N/m. 16. The number of wavelengths per unit time. A) Speed. B) Wavelength. C) Trough. D) Frequency. Show Answer Correct Answer: D) Frequency. 17. The word diffraction means ..... A) Spreading of waves. B) Reflecting of waves. C) Dispersing of waves. D) Refraction of waves. Show Answer Correct Answer: A) Spreading of waves. 18. What is the only type of EM waves the human eye can see? A) Radio waves. B) Gamma ray waves. C) Visible light. D) Light waves. Show Answer Correct Answer: C) Visible light. 19. X rays are used in A) Medical Imaging. B) Electrical heaters. C) Satellite communications. D) The transmission of television signals. Show Answer Correct Answer: A) Medical Imaging. 20. Travels through solids fastest because the molecules are closer together A) Amplitude. B) Frequency. C) Speed of sound. D) Wavelength. Show Answer Correct Answer: C) Speed of sound. 21. ..... spectrum is used for communication through satellites and mobile phones? A) Gamma rays. B) Infrared. C) Radio waves. D) X-rays. Show Answer Correct Answer: C) Radio waves. 22. It is the region of longitudinal wave where the particles of the medium are farthest apart. A) Crest. B) Rarefaction. C) Compression. D) Trough. Show Answer Correct Answer: B) Rarefaction. 23. What is the name given to the apparent shift in frequency when a source of waves is moving? A) Refraction. B) The Doppler effect. C) Diffraction. D) Reflection. Show Answer Correct Answer: B) The Doppler effect. 24. Electromagnetic waves vary in ..... A) The way they reflect. B) The speed they travel in a vacuum. C) Wavelength and frequency. D) The orientation of their electric and magnetic fields. Show Answer Correct Answer: C) Wavelength and frequency. 25. What is the term for when waves line up oppositely? A) Diffraction. B) Reflection. C) Constructive Interference. D) Destructive Interference. Show Answer Correct Answer: D) Destructive Interference. 26. If amplitude is increased then the wavelength A) Increases. B) Decreases. C) Stays the same. D) None of the above. Show Answer Correct Answer: C) Stays the same. 27. How many nodes are present in the second harmonic of a standing wave? A) 5. B) 3. C) 2. D) 4. Show Answer Correct Answer: B) 3. 28. Give an example of a luminous object. A) Light bulb. B) Star. C) Sun. D) Moon. Show Answer Correct Answer: C) Sun. 29. Is refracting light bending or bouncing? A) Bending. B) Bouncing. C) All the above. D) None of the above. Show Answer Correct Answer: A) Bending. 30. Definition:Trough A) The resting position of a wave. B) The lowest point of a transverse wave. C) The highest point of a transverse wave. D) The center of a wave. Show Answer Correct Answer: B) The lowest point of a transverse wave. 31. A wave in which the vibration is in the same direction as that in which the wave is traveling; sound waves A) Longitudinal wave. B) Transverse wave. C) Mechanical wave. D) Ocean wave. Show Answer Correct Answer: A) Longitudinal wave. 32. Which EM wave is used in satellite communication because it can pass through the atmosphere with little absorption? A) Visible light. B) Microwaves. C) Infrared waves. D) Radio waves. Show Answer Correct Answer: B) Microwaves. 33. A standing wave is created when two identical waves ..... A) Pass through one other perpendicularly. B) Are diffracted by the same gap. C) Pass through one other in opposite directions. D) Reflect off one another. Show Answer Correct Answer: C) Pass through one other in opposite directions. 34. What determines the amplitude of a compressional wave A) Thickness of compression. B) Height of crest. C) Size of wavelength. D) Frequency of the wave. Show Answer Correct Answer: A) Thickness of compression. 35. What is the equation for calculating wave speed? A) V = f-$\lambda$. B) V = f + $\lambda$. C) V = f x $\lambda$. D) V = f / $\lambda$. Show Answer Correct Answer: C) V = f x $\lambda$. 36. Waves that require a medium to travel are known as: A) Mechanical Waves. B) Non-Mechanical Waves. C) Sine Waves. D) Electromagnetic Waves. Show Answer Correct Answer: A) Mechanical Waves. 37. Which of the following is used to calculate the velocity (V) of a wave? A) V = $\lambda$ + f. B) V = $\lambda$ / f. C) V = $\lambda$ * f. D) V = $\lambda$-f. Show Answer Correct Answer: C) V = $\lambda$ * f. 38. Explain the concept of diffraction of waves. A) Diffraction of waves is the absorption of waves by obstacles. B) Diffraction of waves is the bending of waves around obstacles and the spreading of waves as they pass through openings, caused by interference effects. C) Diffraction of waves is the reflection of waves off obstacles. D) Diffraction of waves is the amplification of waves as they pass through obstacles. Show Answer Correct Answer: B) Diffraction of waves is the bending of waves around obstacles and the spreading of waves as they pass through openings, caused by interference effects. 39. A bouncing spring is an example of harmonic motion. A) TRUE. B) FALSE. C) All the above. D) None of the above. Show Answer Correct Answer: A) TRUE. 40. The speed of sound depends on these two things: A) The type of medium and the temperature of the medium. B) Speed of the medium and temperature of the medium. C) Temperature of the medium and sound of the medium. D) None of the above. Show Answer Correct Answer: A) The type of medium and the temperature of the medium. 41. What is the result of diffraction? A) The wave stops. B) The wave speeds up. C) The wave changes color. D) The wave spreads out. Show Answer Correct Answer: D) The wave spreads out. 42. Which type of wave can travel through mass and a vacuum? A) Electromagnetic. B) Mechanical. C) Electromagnetic and Mechanical. D) None of the above. Show Answer Correct Answer: A) Electromagnetic. 43. Which of the following statements are true? A. Real Images are upright B. Real Images are inverted C. Virtual Images are inverted D. Real and virtual images are the same. A) Real Images are upright. B) Real Images are inverted. C) Virtual Images are inverted. D) Real and virtual images are the same. Show Answer Correct Answer: B) Real Images are inverted. 44. The distance between repeating parts of a wave. A) Frequency. B) Amplitude. C) Pitch. D) Wavelength. Show Answer Correct Answer: D) Wavelength. 45. The high point of a wave. A) Trough. B) Crest. C) Amplitude. D) Wavelength. Show Answer Correct Answer: B) Crest. 46. Which of the following best describes a "translucent" material? A) Completely blocks light. B) Transmits all light clearly. C) Scatters light and allows partial visibility. D) Reflects all light. Show Answer Correct Answer: C) Scatters light and allows partial visibility. 47. What should be done to ensure clear waveforms when using an oscilloscope? A) Increase the room temperature. B) Use a different microphone. C) Decrease the volume of the sound. D) Alter the oscilloscope settings. Show Answer Correct Answer: D) Alter the oscilloscope settings. 48. ..... is the distance between waves, measured from one crest to the next crest. A) Wavelength. B) Frequency. C) Amplitude. D) None of the above. Show Answer Correct Answer: A) Wavelength. 49. In designing an experiment to investigate the relationship between frequency, wavelength, and speed in waves, if you choose a frequency of 300 Hz and measure a wavelength of 1.2 meters, calculate the speed of the waves. Which formula would you use? A) Speed = Wavelength / Frequency. B) Speed = Frequency x Wavelength. C) Speed = Frequency + Wavelength. D) Speed = Wavelength-Frequency. Show Answer Correct Answer: B) Speed = Frequency x Wavelength. 50. The maximum displacement (distance) of a wave from its rest position. (height of a wave crest or depth of a trough) A) Frequency. B) Pitch. C) Wavelength. D) Amplitude. Show Answer Correct Answer: D) Amplitude. 51. E/M is short for: A) Electromagnetic. B) Electromagnificent. C) Electromagician. D) Electromatter. Show Answer Correct Answer: A) Electromagnetic. 52. The loudness of sound can be changed by A) Decreasing the wavelength. B) Decreasing pitch. C) Increasing the frequency. D) Increasing the amplitude. Show Answer Correct Answer: D) Increasing the amplitude. 53. Polarisation is a property of$_{(VCAA 2018)}$ A) All types of waves. B) Only sound waves. C) Only transverse waves. D) Only longitudinal waves. Show Answer Correct Answer: C) Only transverse waves. 54. Which phenomenon occurs when light bounces off a surface? A) Diffraction. B) Refraction. C) Reflection. D) Dispersion. Show Answer Correct Answer: C) Reflection. 55. The name for a substance through which energy is traveling: A) Long. B) Ocean. C) Slinky. D) Medium. Show Answer Correct Answer: D) Medium. 56. The time needed for an object to complete one full cycle of simple harmonic motion is the ..... A) Harmonic. B) Frequency. C) Period. D) Amplitude. Show Answer Correct Answer: C) Period. 57. What is the frequency of a wave equal to? A) 1/Wavelength. B) 1/Amplitude. C) 1/Period. D) 1/Velocity. Show Answer Correct Answer: C) 1/Period. 58. Define wavelength in your own words. A) Wavelength is the amplitude of a wave measured from its peak. B) Wavelength is the frequency of a wave multiplied by its speed. C) Wavelength is the distance between two successive points of similar phase in a wave. D) Wavelength is the speed of a wave in a medium. Show Answer Correct Answer: C) Wavelength is the distance between two successive points of similar phase in a wave. 59. In which type of wave are vibrations at 90$^\circ$ to the direction of energy transfer? A) Sound waves. B) Shockwaves. C) Light waves. D) Ripples on the surface of water. Show Answer Correct Answer: C) Light waves. 60. For resonance to occur, loose or open ends must correspond with A) Nodes. B) Antinodes. C) All the above. D) None of the above. Show Answer Correct Answer: B) Antinodes. ← 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 6Class 11 Physics (Part Ii) Chapter 17 Waves Quiz 7Class 11 Physics (Part Ii) Chapter 17 Waves Quiz 8 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books