This quiz works best with JavaScript enabled. Home > Cbse > Class 11 > Science > Physics Part Ii > Class 11 Physics (Part Ii) Chapter 17 Waves – Quiz 25 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 11 Physics (Part Ii) Chapter 17 Waves Quiz 25 (60 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. The lowest frequency form of visible light is ..... A) Violet. B) Red. C) Green. D) Yellow. Show Answer Correct Answer: B) Red. 2. What is the speed of a wave and how is it calculated? A) Speed = Wavelength / Period. B) Speed = Velocity / Frequency. C) Speed = Amplitude / Period. D) Speed = Frequency x Wavelength. Show Answer Correct Answer: A) Speed = Wavelength / Period. 3. What are the main properties of sound waves? A) Reflection, refraction, diffraction, and absorption. B) Color, texture, density, and pressure. C) Volume, pitch, tone, and rhythm. D) The main properties of sound waves are frequency, wavelength, amplitude, speed, and phase. Show Answer Correct Answer: D) The main properties of sound waves are frequency, wavelength, amplitude, speed, and phase. 4. How does the angle of incidence relate to the angle of reflection? A) The angle of incidence has no relation to the angle of reflection. B) The angle of incidence is equal to the angle of reflection. C) The angle of incidence is less than the angle of reflection. D) The angle of incidence is greater than the angle of reflection. Show Answer Correct Answer: B) The angle of incidence is equal to the angle of reflection. 5. If you increase the frequency of a wave, what happens to the wavelength of that wave? A) It increases. B) It is not affected. C) It decreases. D) None of the above. Show Answer Correct Answer: C) It decreases. 6. What is the maximum displacement of a wave from its rest position called? A) Wavelength. B) Frequency. C) Period. D) Amplitude. Show Answer Correct Answer: D) Amplitude. 7. Suppose the air temperature is 21$^\circ$C. What is the speed of sound? A) 457.0 m/s. B) 343.6 m/s. C) 352.6 m/s. D) 332.3 m/s. Show Answer Correct Answer: B) 343.6 m/s. 8. Sound waves cannot travel through outer space because A) The gas molecules in space are too far apart. B) They are electromagnetic waves. C) They cannot travel through the cold of outer space. D) There is no one to hear it. Show Answer Correct Answer: A) The gas molecules in space are too far apart. 9. Wave motion:Cellphones A) TRUE. B) FALSE. C) All the above. D) None of the above. Show Answer Correct Answer: A) TRUE. 10. When a wave travels through a medium, the wave transfers A) Mass, only. B) Energy, only. C) Both mass and energy. D) Neither mass nor energy. Show Answer Correct Answer: B) Energy, only. 11. Which EM wave has the highest frequency? A) Microwaves. B) Gamma rays. C) X-rays. D) Ultraviolet rays. Show Answer Correct Answer: B) Gamma rays. 12. A standing wave is formed on a string of length d. Which of the following statements is/are true?1. A wave is travelling along the string and reflecting back on itself.2.The standing wave is an example of superposition.3.The wavelength of the standing wave is d. A) 1, 2 and 3. B) Only 1 and 2. C) Only 2 and 3. D) Only 1. Show Answer Correct Answer: B) Only 1 and 2. 13. In an ocean wave, what is the medium? A) Sunlight reflecting off the ocean surface. B) The boats as the move across the water. C) The currents underneath the ocean surface. D) The ocean water is the medium. Show Answer Correct Answer: D) The ocean water is the medium. 14. Do all waves always have the same wavelength? A) Yes. B) No. C) All the above. D) None of the above. Show Answer Correct Answer: B) No. 15. The wavelength $\lambda$ A) The lowest point of the wave. B) The distance between two successive crests. C) The highest point of the wave. D) The time of one wavelength. Show Answer Correct Answer: B) The distance between two successive crests. 16. Which of the following can act as a medium? A) Solids. B) Liquids. C) Gases. D) All of the above. Show Answer Correct Answer: D) All of the above. 17. Due to the Doppler effect, it a sound (like a train ) is moving toward you, how will the sound change as it approaches? A) Pitch sounds lower. B) Amplitude sounds higher. C) Amplitude sounds lower. D) Pitch sounds higher. Show Answer Correct Answer: D) Pitch sounds higher. 18. Amplitude reflects the amount of ..... in a wave. We learned in the waves lab that it is related to the ..... of sound waves. A) Energy, volume. B) Energy, pitch. C) Speed, pitch. D) Speed, volume. Show Answer Correct Answer: A) Energy, volume. 19. What happens to sound waves when they strike a surface and quickly lose their energy? A) Absorption. B) Diffraction. C) Transmitted waves. D) Reflection. Show Answer Correct Answer: A) Absorption. 20. Which of the following statements describes the period of a wave? A) Distance from resting position to top of the wave. B) Distance from crest to crest. C) Number of waves per second. D) Time taken to produce one wave. Show Answer Correct Answer: D) Time taken to produce one wave. 21. The disturbance is parallel to the direction of wave travel. A) Mechanical Wave. B) Electromagnetic Wave. C) Transverse Wave. D) Longitudinal Wave. Show Answer Correct Answer: D) Longitudinal Wave. 22. The lowest point on a transverse wave is the A) Rest position. B) Compression. C) Trough. D) Crest. Show Answer Correct Answer: C) Trough. 23. When a noise is moving towards an observer, the closer it comes ..... A) The lower the pitch. B) The higher the pitch. C) The longer the noise. D) The quieter the noise. Show Answer Correct Answer: B) The higher the pitch. 24. If waves overlap and are in phase, how will that affect the resultant wave? A) Increase the amplitude. B) Increase the frequency. C) Decrease the frequency. D) Decrease the amplitude. Show Answer Correct Answer: A) Increase the amplitude. 25. Utilized in treating cancer, the radiotherapy A) Microwave. B) X-ray. C) Visible light. D) Gamma ray. Show Answer Correct Answer: D) Gamma ray. 26. A wave is present in a slinky. A coil of the slinky makes 12 complete up and down cycles of vibration in 4 seconds. The period of this wave is ..... and the frequency is ..... A) 3 seconds; 0.333 Hz. B) 4 seconds; 0.25 Hz. C) 0.333 seconds; 3 Hz. D) 4 seconds; 3 Hz. Show Answer Correct Answer: C) 0.333 seconds; 3 Hz. 27. What is the frequency of an electromagnetic wave that has a wavelength of 10, 000 m? A) 20, 000 Hz. B) 4.5 x 10$^{5 }$Hz. C) 30, 000 Hz. D) 15 Hz. Show Answer Correct Answer: C) 30, 000 Hz. 28. If velocity of a particle is 3 times of that of electronand ratio of de brogile wavelength of particle to thatof electron is $1.814\times10^{-4}$ A) Neutron. B) Deutron. C) Alpha. D) Tritium. Show Answer Correct Answer: A) Neutron. 29. The distance in between two waves. A) Wave speed. B) Frequency. C) Wavelength. D) None of the above. Show Answer Correct Answer: C) Wavelength. 30. How do sound waves differ from light waves? A) Sound waves require a medium to travel; light waves do not. B) Sound waves can travel through a vacuum like light waves. C) Light waves require a medium to travel; sound waves do not. D) Sound waves travel faster than light waves. Show Answer Correct Answer: A) Sound waves require a medium to travel; light waves do not. 31. A wave has frequency of 5 Hz and a speed of 25 m/s. What is the wavelength of the wave? A) 5 m. B) 125 m. C) 25 m. D) 25 m/s. Show Answer Correct Answer: A) 5 m. 32. A radio station sends out a signal of 105.3 MHz. What is the wavelength of the radio wave? A) 2.849 m. B) 1.053 x 10$^{8}$ m. C) 3.257 x 10$^{-6}$ m. D) 2848 x 10$^{6}$ m. Show Answer Correct Answer: A) 2.849 m. 33. Electromagnetic waves can travel without a medium. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 34. Waves bending because of a change in speed is called ..... A) Diffraction. B) Rarefaction. C) Refraction. D) Compression. Show Answer Correct Answer: C) Refraction. 35. Which EM wave is used to treat cancer? A) Infrared. B) Radio. C) Gamma. D) Xray. Show Answer Correct Answer: C) Gamma. 36. Which wave has the highest penetrating power (and is more dangerous)? A) Gamma Ray. B) Microwave. C) X-ray. D) Ultraviolet. Show Answer Correct Answer: A) Gamma Ray. 37. Describe the concept of frequency in relation to waves. A) Frequency in relation to waves is the number of complete cycles of a wave that occur in a given time period. B) Frequency is the amplitude of a wave. C) Frequency is the wavelength of a wave. D) Frequency is the speed of a wave. Show Answer Correct Answer: A) Frequency in relation to waves is the number of complete cycles of a wave that occur in a given time period. 38. A wave has a wavelength of 0.025 m and a frequency of 3 Hz. Calculate the velocity of this wave. A) 750 m/s. B) 75 m/s. C) 3.25 m/s. D) 0.075 m/s. Show Answer Correct Answer: D) 0.075 m/s. 39. All sound waves are- A) Standing waves. B) Reflected waves. C) Longitudinal waves. D) Electromagnetic waves. Show Answer Correct Answer: C) Longitudinal waves. 40. All of the waves listed below are a part of the electromagnetic spectrum except A) Light Waves. B) Gamma Rays. C) X Rays. D) Sound Waves. Show Answer Correct Answer: D) Sound Waves. 41. The number of waves that pass a certain point. A) Wave speed. B) Frequency. C) All the above. D) None of the above. Show Answer Correct Answer: B) Frequency. 42. The height of the wave from its resting point is called its A) Frequency. B) Wavelength. C) Velocity. D) Amplitude. Show Answer Correct Answer: D) Amplitude. 43. Sound waves travel the fastest through dense materials. Through which of these would sound waves travel the SLOWEST? A) Water. B) Air. C) Metal. D) Glass. Show Answer Correct Answer: B) Air. 44. What is an example of an object demonstrating Natural Frequency? A) A person hitting a table. B) A bell being hit and allowed to ring. C) A car engine running. D) A clock ticking. Show Answer Correct Answer: B) A bell being hit and allowed to ring. 45. Which is a tool that is used in medicine to view internal organs and pregnancy? A) Sonar. B) Oscilloscope. C) Doppler. D) Ultrasound. Show Answer Correct Answer: D) Ultrasound. 46. As the period decreases, the frequency: A) Increases. B) Decreases. C) Remains the same. D) None of the above. Show Answer Correct Answer: A) Increases. 47. Define antinodes in the context of standing waves. A) Antinodes are points where the wave is stationary. B) Antinodes in the context of standing waves are points of maximum amplitude. C) Antinodes are points of minimum amplitude. D) Antinodes are points of zero amplitude. Show Answer Correct Answer: B) Antinodes in the context of standing waves are points of maximum amplitude. 48. Which seismic wave can only travel through solids? A) Primary waves. B) Sound waves. C) Infrasound waves. D) Secondary waves. Show Answer Correct Answer: D) Secondary waves. 49. ..... is the midpoint in a wave where amplitude begins. A) Crest. B) Line of origin. C) Wavelength. D) Amplitude. Show Answer Correct Answer: B) Line of origin. 50. The maximum distance from the rest position is called A) Wavelength. B) Frequency. C) Speed. D) Amplitude. Show Answer Correct Answer: D) Amplitude. 51. When a wave or pulse travels from medium A to medium B and v$_{A}$ > v$_{B}$, it is inverted upon reflection A) B is equally denser than A. B) B is denser than A. C) A is denser than B. D) None. Show Answer Correct Answer: B) B is denser than A. 52. True or False:Longitudinal waves move side to side. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 53. Sound waves are described as A) Mechanical and transverse. B) Mechanical and longitudinal. C) Electromagnetic and transverse. D) Electromagnetic and longitudinal. Show Answer Correct Answer: B) Mechanical and longitudinal. 54. What do we call the part of a longitudinal wave that is when the waves are squeezed together? A) Crest. B) Rarefaction. C) Trough. D) Compression. Show Answer Correct Answer: D) Compression. 55. What is a TRANSVERSE wave A) A wave in which the medium vibrates at right angles to the direction of energy transfer. B) A wave in which the medium vibrates at parallel to the direction of energy transfer. C) Not sure. D) A wave that tranverses. Show Answer Correct Answer: A) A wave in which the medium vibrates at right angles to the direction of energy transfer. 56. Resonance is standing waves is caused by: A) Interference with reflections from boundaries. B) Loss of energy due to absorption. C) The product of frequency multiplied by wavelength,. D) The wavelength being smaller than the smallest distance between the boundaries. Show Answer Correct Answer: A) Interference with reflections from boundaries. 57. What is a repeating disturbance or vibration that transfers or moves energy from place to place? A) Medium. B) Rarefaction. C) Wave. D) Compression. Show Answer Correct Answer: C) Wave. 58. Slinkies, water, and string are examples of ..... in which waves can travel. A) Periods. B) Mediums. C) Amplitudes. D) Wave fronts. Show Answer Correct Answer: B) Mediums. 59. Is it true then that transmission & reflection can't happen at the same time? A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 60. How does the Doppler Effect affect sound frequency? A) The Doppler Effect increases sound frequency when the source approaches and decreases it when the source recedes. B) The Doppler Effect only affects light frequency, not sound. C) The Doppler Effect has no impact on sound frequency. D) The Doppler Effect increases sound frequency when the source recedes. Show Answer Correct Answer: A) The Doppler Effect increases sound frequency when the source approaches and decreases it when the source recedes. ← 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